What do you do for fun with your horse?

I'm at a stables with a heap of kids (most of the boarders are 10-20yrs old), we have m games and play races, stuck in the mud, bullrush, tip etc. Or hide and seek tip on the trails, play at the x country, go on m trail rides singing and screaming, go to the beach and swim on the horses and we swap horses all the time, get towed in the water by someone else on their horse. It's so much fun, my friend and I mainly lead and organize stuff cause we're the older kids lol.