You may not be able to print your own money, but you can profit from your ink cartridges—the empty ones, no less! Head on over to cashforcartridges.co.uk and check on their price list to see just how much you can make recycling cartridges.

For those of you in the US, visit freerecycling.com. According to their list of qualifying ink jet cartridges, you can make up to $3.60 per item sent! If you refer friends, you’ll get a 20% commission on every cartridge they send in during their membership.