Let your space invaders try their hands at this cosmic (and child-friendly) update of old-fashioned darts.
Kids toss comets at a felt game board; Velcro dots on the balls make them stick. The rules of the game are simple: each player gets 3 throws per turn and earns points for landing within different orbits. Hitting the sun nets a 50-point bonus, and a planet adds 40 points. Let the kids play a few rounds, then total up the scores to determine the winner.