Wet noodle. 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. This link is broken, but it's pretty self explanatory.
Balloon tennis for an indoor gross motor sensory play game. This is a perfect activity for the end of the school year. Great for students with motor challenges and other special learning needs. Read more at: http://littlebinsforlittlehands.com/balloon-tennis-gross-motor-play-activity/