Have Some Fun
For the carnival: Life-size Kerplunk game (with instructions)
13 DIY Backyard Games and Play Structures
32 Of The Best DIY Backyard Games You Will Ever Play
32 Fun DIY Backyard Games To Play (for kids & adults!)
Create a hallway “laser obstacle course” with yarn and tape to keep them busy.
Balloon Rockets- a fun kids activity that doubles as a Science lesson. (Now that's FUN Science!)
Homemade Moon Dough. "My kids love this stuff. Way Cheaper then buying it!"