A useful tool around the house and the car is a compressor.

http://www.sears.com/sr/javasr/product.do?BV_UseBVCookie=Yes&vertical=TOOL&pid=00915214000

There is a 10% discount if you are part of the Craftsman club. You can get another 10% by signing up for their credit card.

Actually, this is the one we got:
http://www.sears.com/sr/javasr/product.do?BV_UseBVCookie=Yes&vertical=TOOL&pid=00916724000

Same discounts as in the first post though