Naturally, indoor sports are typically variations of the types you would play outside. Basketball, for example is not a full game of in many ways. You cannot dribble, of course, and it’d be a little tough to get more than 2 folk to a team, but you can shoot, block, and pass just too. An air hockey table is a great thing to own for indoor sports. It’s fun and simple and is it’s own setup. Find a good one at http://www.air-hockey-game-table.com. Miniature golfing with small plastic golfing clubs and cups are another idea. It’s pretty simple to line up tiny golfing courses in your own residence, using items round the house as obstructions and to order courses. Have fun with the mini versions of your favorite sports when you can’t play outside.