Or printer ink cartridges?
Some printer companies, like HP, have stepped up to offer domestic recycling of cartridges. Their free mail-back program has kept millions of cartridges from being trashed or burned in other countries. Cartridges sent back to HP are emptied, disassembled, and the materials separated. The plastic is then shredded and used to make new cartridges.
another cool aspect to these facilities is the way they ingeniously sort materials from each other. they use air gusts, lasers, mechanical means and even electron streams to separate stuff out. the electron streams for example are used to sort magnetic from non magnetic metal.