Don’t toss them into the trash!
Did you know that USPS provides free mail in envelopes for your ink cartridges and cell phones? Customers can get free mail-back envelopes for recycling inkjet cartridges, cell phones, PDAs, digital cameras and other small electronics.
Or if you want to make a bit of money, take them to Staples and they will give you a $2 gift voucher for every cartridge you return.