I've seen diaper cakes sold before at craft shows and stuff and decided I was going to look for one of those for her. The local baby boutique store had some lovely plain ones that were straight-up cake style, but they were very "girl" or "boy" and had a crap-ton of pins in them, which to me just sounds like a terrible idea in a baby gift. So I took matters into my own hands and decided to make my own diaper cake, that was both pin-less, and didn't damage or ruin ANY of the baby items in the cake. (like crunching all the diapers up into little rolls)
The contents for my tricycle included: A Pack of 64 Pampers Size 1 Diapers, 3 Receiving Blankets, 1 Pair of Socks, 1 Stuffed Lamb.
AND, as promised, there isn't a single pin holding things together, and there's no tape on the diapers, and nothing is rolled, crumpled or otherwise unusable. This is a 100% functional shower gift that's also 100% adorable.