Seen in a few illustrations of feasts and eating utensils are aquamaniles -- a sort of pitcher used for hand-washing. Typical forms are animals, mounted knights or horsemen, and fantasical monsters; most of the surviving examples seem to be metal, but there are several ceramic examples too. (More information can be found in the Florilegium ; The Art of the Medieval Aquamanile is also interesting.)
Lions, Dragons, and Other Beasts: Aquamanilia of the Middle Ages, Vessels for Church and Table , an exhibit of the aquamaniles from the Met (several of which are also linked below), was on display at The Bard Graduate Center for Studies in the Decorative Arts, Design, and Culture in New York City through October 15, 2006.
Following are a few examples of aquamaniles from museum collections and from medieval artwork.
Eagle , bronze with silver and copper, late 8th century Iran (also here and here )
Peacock , Spain, c. 972
The Museum of London's ceramics collection features fragments of ceramic aquamaniles made in England between the 11th and 14th centuries, including acc. nos. A16880 , A22338 , and A16796 .
Gryphon , gilded bronze with silver and niello, early 12th century Lower Saxony (also here and here )
Horseman , bronze, 12th century Islamic (?)
Vaguely zoomorphic liturgical aquamanile (also here ), 12th century Poland
Centaur with a frog in his mouth , 12th century
Man-eating lion , brass, 12th century
Lion , brass, 12th century
Lion , brass, 12th century
Lion , brass, 12th century
Lion , bronze with traces of gilding, 12th century
Griffin , gilt bronze, Mosan, c. 1150
Ceramic ram , made in Scarborough between the late 12th and early 14th century
Ceramic bird , 12th century; painted in a Byzantine faience style, ornamented with green glaze, geometric motifs, and fish scales
Griffin, Germany or Mosan, c. 1130 (V&A 1471-1870 )
Lion , bronze, late 12th century Magdeburg, Germany
Lion , ceramic, 12th/13th century (possibly Islamic)
Horse and rider , c. 1150-1200
Horse and rider (possibly oriental/Islamic), c. 1200
Lion trampling vipers , northern Germany c. 1200
Lion's head , Lower Saxony, c. 1200
Gryphon , Lower Saxony, c. 1200 (also here and here )
Sword-bearing centaur with serpents , Germany c. 1200
13th century aquamaniles at the Germanisches Nationalmuseum: photos here and here
Ceramic horse , 13th century Eggenberg
Cow and Calf attacked by a lion , bronze and silver, early 13th century Persia
Crowned lion , bronze, early 13th century Lower Saxony
Knight on a restless horse , bronze or brass, first half of the 13th century
Bird-Man , bronze, early 13th century southern Germany
Lion , gilded bronze, 13th century northern France
Lion , 13th century Flanders or northern Germany
Lion , 13th century Saxony
Man on horseback, bronze, 13th century Scandinavia (V&A M.70-1949 )
Horseman , bronze, 13th century England or Scandinavia
Knight on Horseback , bronze, 13th century England
A hunter riding a horse , c. 1200
A hunter riding a horse , 13th century (found in Slovakia)
A hunter riding a horse , 13th century Scandinavia
Lion , bronze?, 13th century
Horse , bronze or brass, Maas, 13th century
Kneeling Man , bronze, 13th century Lower Saxony
Lion , copper, 13th century northern Germany
Lion , brass, 13th century Flanders or northern Germany
Kneeling (lame?) man , Hildesheim, Germany, 13th century
Lion , Lower Saxony, early 13th century
Lion , Lower Saxony, c. 1220-1225
Crowned centaur (Chiron?) fighting a dragon , Hildesheim, Germany, 1240-1260 (this , this , and this seems to be more views of the same item)
Lion , Lower Saxony, 1240-1260 (also here )
Lion , mid-13th century Lower Saxony
Wolf (?) with a bird in its mouth and a smaller animal on its back, Germanic, 13th century
Knight on a saddled horse , bronze, central Europe, c. 1250
Lion , brass, Hildesheim, c. 1250 (also here ; or go to LACMA Collections Online and enter AC1992.152.100 into the quicksearch box)
Knight on horseback , bronze, Hildesheim, second half of the 13th century (also here )
Lion , Lower Saxony, 1250-1300
Samson and Lion , leaded brass, mid-13th to early 14th century northern Germany (possibly Hildesheim); also here and here .
Ceramic aquamanile made in northern Austria, c. 1275-1300
Unicorn (with a dragon) , Lower Saxony, fourth quarter of the 13th century
Lion , Lower Saxony, 1280-1300
Three enamelled basins for aquamaniles, Limoges, 13th century: here , here , and here
Beast , ceramic with green glaze, mid- to late 13th century England
Mounted Knight , bronze, late 13th century Saxony
A stylized quadruped (probably a lion), brass, 13th-14th centuries
Stag from the Cwm Nant Col hoard in Wales, late 13th or early 14th century
Lion , late 13th or beginning of the 14th century, Lower Saxony
Unicorn , bronze, early 14th century Lower Saxony
Saddled horse , 14th century Lower Saxony
A man's head , bronze, early 14th century northern Germany (Hildesheim?)
Lion , bronze, early 14th century Germany
14th century German aquamanile at the Germanisches Nationalmuseum
Lion
Lion (Historiska Museet, Sweden)
Lion , c. 1350
Lion , 14th century
Lion , tinned bronze, 14th century
Horse with a quadruped on its back , brass, 14th century
Lion , bronze, Lower Saxony c. 1350
Lion with dragon-handle , bronze, Germany (Master Bernhuser), last quarter of the 14th century
Lion , and another lion , 14th or 15th century
Aristotle and Phyllis , bronze, late 14th/early 15th century northern Germany
Aristotle and Phyllis (also here ), bronze, early 15th century eastern France or southern Netherlands
Lion , Lower Saxony, c. 1400 (also here )
Lion , Germany, c. 1400
Horse , brass, Nuremburg
Lion , brass, Nuremburg, c. 1400
Gryphon , Nuremberg, c. 1400 (also here )
Horse , Nuremberg, c. 1400
Unicorn (with a dog on its back), Nuremberg, 1400-1420 (also here )
Knight on horseback , Regensburg, first half of the 15th century
Lion (also here and here ), latten alloy, 15th century Nuremberg
15th century aquamaniles at the Germanisches Nationalmuseum: photos here , here , and here
Lion , brass, 15th century
Lion , brass, 15th century
Lion , brass, 15th century
Lion, bronze, 15th-16th century Germany (V&A 561-1872 )
Bust of a young man , brass, 15th century
Horse , and another horse ; both are 15th century brass
Horse , bronze, 15th century Germany
Horse , brass, Flanders or northern Germany
Beast , ceramic with green glaze, 15th century Switzerland (see description )
Horse , brass, Germany, c. 1441-1460
Saint Martin of Tours dividing his cloak , brass, 16th century
Aquamanile with cuerda seca decoration , Spain, c. 1520
Ceramic aquamanile made in 16th century Raeren
Ceramic aquamanile made in Raeren in the 1570s; has busts of Philip II of Spain and Anne of Austria
Some non-figural lavabos (hanging lavers), 15th-16th centuries, from churches and museums in Belgium: Kerk Sint-Paulus, Vollezele ; Kerk Sint-Petrus en Urbanus, Huise ; Kerk Sint-Marinus, Herk-de-Stad ; Kerk Sint-Leonardus, Zoutleeuw ; Kerk Sint-Eligius, Eine ; Kerk O.L. Vrouw, Lichtaart ; Kerk Sint-Niklaas, Dessel ; Kerk Sint-Willibrordus, Kasterlee ; Kerk Sint-Jan-Baptist, Weelde ; Kerk Sint-Andries, Balen ; Kerk Sint-Trudo, Eksel ; another from Kerk Sint-Trudo, Eskel ; Kerk O.L. Vrouw, Deinze ; Kerk Sint-Martinus, Kerkom ; Kerk Sint-Kwinten, Zonhoven ; Kerk Sint-Laurentius, Bocholt ; Kapel O.L. Vrouw der Bedruketn, Opitter ; Kerk Sint-Odulphus, Borgloon ; Kerk Maria Tenhemelopneming, Zutendaal ; and this , this , this , this , and this at the Museum Vleeshuis in Antwerp; Eglise Saint-Pancrace, Focant ; Eglise Saint-Lambert, Dinant ; Muse Royal de Mariemont, Morlanwelz-Mariemont ; and the collection of J. Frsart in Lige . Also, Cleveland 1965.22 . A similar aquamanile appears in the center panel of the Mérode Altarpiece ; I'm unsure whether this is meant only as a symbol of Mary's chastity & purity (as the ewer & basin in Campin's Werl Altarpiece and Madonna and Child or this detail of van der Weyden's Annunciation Triptych ), or if it's meant to be seen as a typical element of 15th century Flemish domestic interior. Also V&A M.2669-1931 , M.2676-1931 , M.2-1937 .
Since I've had a few inquiries on where one can obtain aquamaniles ...