Look at toy stores for the "Hop Balls" or Hoppity
Hop balls. Those balls with the handle the kids sit on, and bounce. make great
toys for the horse, as they have the handle they can grab with mouth to toss it.
Just decide if the handle is big enough to get a leg through, and if the ball
hanging off the horses leg would be an issue. lol But they are
cheap. Also, we have given the horse those plastic dock / boat bumpers.
Wal-Mart has them. Long white plastic, with a hole in each end for rope. Attach
short piece of rope if you want the horse to be able to grab and
toss.