custom center caps..........?

ok so i posted this thread in just the subaru forum....so maybe i will get a better response if i post it here.....
im looking to get custom center caps. i dont even know if this is the right word or term for them but i will explain. its like the little circular sticker in the middle of the rim...with like the cars logo...center caps???
well im looking to get some custom made for my husband. does ne1 know of a website or place that does this?? is this even possible??
Thanx!