What did Alice give the dodo that the dodo give back?

Alice gave the Dodo a piece of cake, which was part of the "Caucus Race" in Lewis Carroll's "Alice's Adventures in Wonderland." In return, the Dodo gave Alice a prize for participating in the race, which was a small piece of the cake she had provided. This whimsical exchange highlights the nonsensical nature of the story and the playful interactions between characters in Wonderland.