Monster truck obstacle course...these tires were a hit at the party. We used them as pits for the beanbag toss and the kids sat and played in them all afternoon. They were a little big for 4 year olds to run through/over without tripping. Got them on amazon.com
Planning a Blaze and the Monster Machines birthday party for your preschooler? This simple, step-by-step guide will transform your home into the ultimate party Monster Dome. Make your kid's birthday dreams come true with a monster truck birthday party complete with printable party supplies, Blaze goody bags, party games, invitations, decorations, and more.