I have been working on starting up a local hackerspace and have a computer and recycling center that is supporting the project. while i was there the other day we were talking over a dumpster full of old toner cartridges and they were mentioning that disposing of the toner its self was a problem. Then as Im looking another thought came to me, the toner is essentially powdered plastic, so why wouldn't it work as a laser sinstered powder printer.
Then today arrives in my mailbox another instructible and in it was how to make a low power laser cutter. Im thinking mix the two idea's together and you have a laser sintered powder printer.
I will post more as the project develops.