When my granddaughter had her first birthday we decided it to be a "hat party" because it was the easiest and most practical theme that we could think of. Guests were only required to come wearing "any" attractive hat. We encouraged the kids to don their most fabulous hats in order to win cool prizes.. During the party one number was a "fashion show sort of" making the kids just walk in front to show off their spanky hats. From these kids we chose one boy and one girl to win "best hat". We rented some playground facilities so kids will have more fun.