Originally Posted by Rochard

Buy and sell things.

My wife and I hit the free section of Craigslist and pick up furniture and bikes and what not for free, fix them up, and then turn around and sell them. Sounds stupid right? We picked up an old adirondack chair, tighted up the screws, bought a can of stain for $3, and sold the chair on Craigslist for $80. We got a couch and matching chair a few weeks ago, cleaned them up, sewed a little bit, sold it for $120.

All of this goes to my wife's charity, and we usually give about $800 a month.

I also do the same with Alienware laptops. Brand new they sell for $1200, but you can buy them used for $300. I get them, clean them up, reinstall the OS, put them on CL or Ebay and sell them for $600.