@Crescent City Books is a 2 story bookshop that specializes in antique, out of print, rare books, maps, engravings and prints. There is also @Faulkner House Books where they feature books by Faulkner and other rare editions and fine literature.
There are tons of volunteering options in new orleans but for a summer camp one then check out @Camp Restore they are a faith based camp that believes in restoring faith, home and community.
Best option when they are that young is to do it at your pediatrician's office. You can also get them done at some piercing/tattoo spots but you need to call before and check their age limit. I got my baby's done @Merle Norman Cosmetic Studio for about $20