I know, I know -- let's ride our unicycles 'round and 'round a 3 km dirt/grass track through the woods -- whoever makes the most laps in two hours wins!
Sounds crazy? H'mm. Then I guess you don't have a unicycle. QU-AX has video from the Waldmeisterschaft 2012, and no few of the riders are barely grade-school age (I suspect in riding a unicycle, it helps if you tend to bounce more than splat when you fall). It looks kinda fun.
ETA: They're playing unicycle football here in the States -- well, LA -- now!
(I was at QU-AX's site grabbing an image for comparison in a post at Retrotechnologist).
BUILDING A 1:1 BALUN
4 months ago