Quarterball
(requires one coin, preferably a quarter)

Setup:
Also known as "basketball", this two player game has virtually no set up. Sit on either side of a table or flat playing surface. Three feet apart is a pretty good distance, but as you play you'll get a better feel for what distance works best for you..

Give the quarter to whoever is going first - that person is the "shooter". The other player (the "defender") forms a "basket" with his hands. Form the basket by places the finger tips of both hands (fingers straight out, knuckles facing your opponent) on the table with the thumbs jutting out from the hands and touching each other. The palms of your hands should not be touching the table, but rather angled up and away from it. The "basket" is the hole surrounded by your forefingers and thumbs.

Play:
The shooter places the quarter on edge within a couple inches of his or her side of the table. Spin the quarter (either by flicking one edge with a finger or by placing one finger on each side and moving them quickly in opposite directions). The quarter will spin on edge and move towards the defender's basket - this is called dribbling. When it is as close as possible (or you think it's going to stop spinning) catch it between your thumbs, placing your hands flat (or nearly so) on the table on either side of it.

If you manage to catch the quarter, then try to "shoot" it into your opponent's basket with your thumbs. You cannot reposition your hands from whatever position they were in when you caught the quarter, so be careful. The forefinger of each hand has to remain on the table while you're shooting. If your forefingers move off the table (or slide along it), the shot is missed - treat it as if you didn't catch the quarter at all. If you make the shot, you get a point.

After each shot, the defender becomes the shooter, starting from his or her own side of the table.

If you don't catch the quarter - if it drops flat on the table - your opponent becomes the shooter, but gets to start the quarter spinning from wherever it landed on the table.

Variations:
If you have a shortened playing area, try placing some obstacles between the players. When the quarter hits one, it will stop spinning (or bounce back towards you).

Skills:
This game is all about your physical skills. Some people practice the long ball - they do a short spin, followed by a very accurate shot. I'm more partial to the hard dribble. I try to spin the quarter so that it gets close enough to the basket that I can't miss.