Lego Mindstorm programming with Rev. Andy
Anything that gets your heart pumping e.g. build yourself an assault course in your garden, see how many skips you can do in 2 minutes, time how long it takes to run 6 laps of your garden, challenge a family member to a game.
End of term treat - play games with your family. If you're bored of the games you've got, why not make one e.g. Snakes and Ladders, but change the snakes to football nets and change the snakes to a penalty.