C.M.
We have 6 boys so when I found out we were having a little girl this last time I bought a little onesie that had a butterfly on it and said "Daddy's little princess". He almost cried. You could do something like buy baby booties or a onesie that says something on it. Make a cake decorated with baby stuff. I think it is great that you are trying to have some fun with it. Good luck!!!