Cartridge Madness
This person’s story is truly inspirational. There was a time when Staples would let you recycle an infinite amount of ink cartridges for just $2 a piece. The place where he worked at the time used a lot of ink cartridges and it was his job to recycle them. He ended up doing it under his Staples reward account and accumulated over 1000s of dollars worth of points.
He could use this to buy something at the store, the website, or he could buy a gift card to another store which would get him direct cash. It was legal, of course, but Staples eventually put a 10 cartridge per month cap on recycling and ended his madness.