top bright montessori toys for 2 3 year old girls and boys birthday gift, fine motor skills toddler toys magnetic worm games for age 2 3 4 top bright the caterpillars are firmly attached to the stakes. the mouth part of mommy bird and worms are made of small magnet. as long as the magnet attracts, the bug will hang up. try to stay focused, hand the bug into the bird's mouth, and don't let the bug escape!