The tagline for the Kikaflik is "It's so simple it's brilliant," and I'm still trying to decide if that's true. Simple? Yes; each Kikaflik set includes the board, which is essentially, well, a board, and three foam balls of various sizes. Actually, the board is like a little see-saw, and kids learn to stomp on the end to eject a ball into the air for catching, kicking, batting, etc. (My paranoid-mom mind's eye sees many other -- breakable -- objects taking flight, but maybe your children are better behaved than mine.)

It'd be ideal for an athletically-inclined only child, and the site boasts great success when used with children of various special needs, too. Order from their website; each set is $29.99.