Solitaire is my favorite old school game. No joke. It actually helps me think. People think it's weird, but I love it. Whenever I have writer's block, its helps me. And I always get writer's block at the worst time. My story is going so well then BAM! I just stop. >3< It's so frustrating!
So I just grab a deck of cards and play Solitaire. It really works for me.