use this template to make fake airplane tickets to play "vacation." each kid gets a ticket then you say you are going to hawaii and serve fruit and pretzels as you are on the "airplane" you can even watch a movie on the plane :)
Child Safe Portable On The Go Waterproof Play 'n' Snack Tray Snack & Play travel tray provides a sturdy surface for travel treats and toys, firm enough to eat on, play upon, read, etc. Tray buckles around the child, use with car seats, booster seats, strollers, on airplanes, in movie theaters, etc. Has 2" padded rim to keep toys and snacks on tray. Has two large mesh side pockets. Made of foam and nylon.