While imprisoned by her uncle John, Eleanor was allowed to have 3 maids, and was provided fabric for clothes and bedding, and pocket money as much as 5 mark per quarter.She also got a saddle with gilded reins and scarlet ornaments from John and another saddle from Henry III, which implied that she might be a horsewoman, and that she could not always be confined in her room.
What caught my eye, however, was this factoid:
Henry himself once sent her 50 yards of linen cloth, three wimples, 50 pounds of almonds and raisins respectively and a basket of figs.
The mind boggles at the quantity of almonds... A later footnote provides a shopping list that is suggestive of the royal diet of the times:
Saturday: bread, ale, sole, almonds, butter, eggs. Sunday: mutton, pork, chicken and eggs. Monday: beef, pork, honey, vinegar. Tuesday. pork, eggs, egret. Wednesday: herring, conger, sole, eels, almonds and eggs. Thursday: pork, eggs, pepper, honey. Friday: conger, sole, eels, herring and almonds.
Source: 1215: The Year of Magna Carta, by Danny Danziger and John Gillingham. I don't know if Eleanor had a particular thing for almonds or this was standard medieval-royalty food, but she does seem to have gone through them at a shocking rate. NB the list is a shopping list, which is presumably why conger and eels were bought on the same day.
 I think the sequence was Edmund Gosse - Hamo Thornycroft (friend of Gosse's; awesome name) - Hamo the Sheriff (name remembered from Domesday Book) - Humphrey de Bohun (successor of H. the S.) - Henry III - Eleanor of Brittany.
 John was apparently referred to as John Lackland or Softsword (!)