Wedding gift?

My brother is getting married siguiente month, but I have absolutely no idea what to buy him and his soon-to-be-wife. I am at college so I don't have a lot of money, so please keep that in mind.
My brother is 26 and his fiancé is one año younger. They already live together so they have everything they need for their house.

All ideas are welcome, I really need some inspiration.

Thank tu in advance.