I see lots of baby shower cookies, but is it appropriate to make cookies for a friend AFTER the baby is born? Would they be the same theme as the shower cookies, such as booties, bottles, blocks, etc.?

Sure ...why not!! Here in Canada it is customary to have the baby shower after the baby is born here anyways!!

I just made some for my neighbor to welcome home the baby when they came home from the hospital. This baby was their third, so I made onsies with the new baby's name on it and T-shirts with "big brother Shay" and "big sister Kate" on them so that the older two wouldn't feel left out.

I just make little teddy bear cookies with a pink heart bib and white booties to celebrate my new grandaughter's birth. I gave them to my co-workers (everyone has been asking me if she was born yet) to let them know of her arrival.
Maggi

I ususally do it after the baby is born. That way I can go all out on the pink or blue plus I can add the name. Like bonniebakes said I do the baby undershirt with the new babies name on it or date they were born etc.