I saw this ostracon at the Brooklyn Museum today:
According to the label, it dates to the late New Kingdom, and depicts a mouse seated on a chair holding a flower and a bowl, while a cat fans it, and offers it a cooked goose and a napkin (not bad for someone without opposable thumbs). The label further suggests that this is a satire on Ramesside society, or perhaps reflects a now-lost folktale.
These are both quite possible, of course, but I would like to offer a third interpretation: this is the work of a bored schoolboy who cannot face the prospect of copying out The Tale of Sinuhe yet again.