My person favorite gift, was the Diaper Cake!
Get a large cake round from any party/craft store. Roll infant diapers individually and secure with a rubber band. Then being placing the diapers (on their end) until the whole cake round is covered. Try "hiding" the diaper design to keep everything more white like an actual cake. I put wipee's in the middle to take up space and make it more durable. Anyway, you can make 3 tiers on top of eachother.
To finish: Get cute 1" baby ribbon and tie it around each tier. This covers up the rubber bands :o)
Trimmings: You can add ANYTHING with mini clothes pins! You know, booties, wash clothes, bibs, etc....
Once you get started, your ideas will start flowing!
Finance tip! Just start with the cake round, diapers and the ribbon. Add ONLY what you can afford to after that :o) It's sooooooo easy to over spend on this cute project!
I hope that's one idea you were looking for. It's a very cute way to give someone diapers :O)