My kids want to be just like Daddy, so I got them a magnetic dartboard for xmas. Actually, I got two. One is a piece of cardboard with metal sandwhiched inbetween which is meant to be screwed or nailed to a wall.

The other, more expensive on, feels very much like a lead vest and resembled the old-style roll-up fabric calanders. It can be hung over a nail or door knob. My kids really seem to like these cause they can play like Daddy.