We’re having a Hallowe’en party with a pumpkin decorating contest. This is for kids ages 3 – 6 and younger. They won’t be carving the pumpkins. I plan on having paper, stickers, and other arts and crafts stuff for them to put on the pumpkins. Can we just use Elmer’s glue or what else might work to attach things to the pumpkins for kids this age?