I like rearranging my store room. I attempt to stack things in the most economical way possible. Once I'm done, I calculate the available free space, dismantle everything, and then try to beat my "high score".
Chess FTW! Anand's last game against Topalov in their world championship match was such a beautiful attacking game.
Chess is great for a relaxing yet stimulating game. If you want a fun game for a group, try cranium. It's a combination of charades, pictionary, name that tune and a lot of other games - sure to give you and your friends fun.