You don't have to be very creative, just have to look inside yourself to see what you might want and then go toward that.

A small game I sometimes play when I'm at the grocery store is to ask myself, if I could have anything at all in this store for myself, what would I choose? One item/"the" item. I wander and find "it". It can be small and "common" like a juicy orange or complicated like something from the imported/international aisle. It doesn't even have to be food; maybe you wish you had a certain kitchen utensil but haven't bought it because you don't "need" it. Maybe you wish you had a new pen, or a dozen pens so you weren't always looking for one. Buy an expensive fruit or vegetable you have always wondered about but were afraid to buy. If you don't know how to fix/cook it, find instructions or a recipe online.

I was alone one summer afternoon at the zoo and lonely and sad and stopped and made myself "wish" for something and it turned out to be an ice cream cone. Where (and "when") I was didn't have any ice cream shops nearby so I ended up going to the grocery store and I had to buy ice cream, cones, and a scoop! I went home and made myself an ice cream cone and all this took a couple hours and by the time I had finished, I was feeling better; probably because I had wished for something and then, by my own effort, gotten it.