What are some fun horse activities?

i ride horses and teach 6 people how to ride on my horse thunder. after a while we all get bored and want to do somthing fun (all the peoplei teach are from like 9 to 16) .i want to know some fun learnin activites to do tht will also hlp them ride . id like some fast ones tht envolve runing ,balance, tust, and some tht are slower i hope yall know where im going with this. kinda like riding with a egg in a spoon oh yeah and jumping is also a must . water is also fun for horse and rider especiolly in texas they also need to learn anotomy sooo what r some fun games tht u have dun please answere