Seconding Sors! Character item can be anything :D
Ōkaminoto's character item is not actually stated anywhere but it's a USB flash drive that he can transport his conscience into kinda like a genie and a magic lamp.
(Although if I were to hazard a guess, I think the OP means that they wanted their character's character item to be food, but I think it could have been conveyed better if that was the case)