Wet noodle is so fun. Watch this demo! Tape a cup full of water to the top of a pool noodle. I'd tape a "hold here" on the noodle. The kids race to pass it up and down the line without spilling the water.
doughnut chomp. This also works for apples instead of the typical bobbing for apples (which I think is gross). New set of apples/doughnuts for each group and the kid can have their doughnut/apple when done.