Glad to be a part of this forum! I'm a proud Hoosier and always try to deck my kids out in cute Indiana clothes. Here are some of my favorites!
United State of Indiana: http://www.unitedstateofindiana.com/category/kids
Megan Lee Designs: http://www.meganleedesigns.com/product/indiana-im-love-onesie?tid=26
People for Urban Progress: http://www.etsy.com/listing/87561118/317-green-pup-onesie
Have you seen any more around the state?