I love playing spit and double speed, which I can’t find a link for. It’s where you divide the cards in half, and each person puts four in front of them face up from their stack of cards (which they hold face down), so that theirs are two horizontal rows of four. Then you try to put down your cards any where in the eight laying down that where there are two of a kind (you put cards down face up from the pile in your hand thats face down). Then more double are created and so on.
It’s ridiculously fast and fun. When you run out of doubles, you each pick up your side and put it on the bottom of your pile, and do this until some one goes out of cards. :)
It’s confusing at first, but so much fun once you figure it out.