Wedding gift?

My brother is getting married next 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 year younger. They already live together so they have everything they need for their house.

All ideas are welcome, I really need some inspiration.

Thank you in advance.