Toss him up on his own horse. How else is he going to learn to joust? I mean, that's what Prince Charming put it there for.
Only danger is that it may give him a desire to taste the real thing, and thus another rider is born. DH and I both ride horses IRL, and we both ride the carousel at WDW. Only other place I can think of that we do that is an old-time amusement park in PA called Knobels, where you can still grab a brass ring from the outermost horses. Beyond cool!
