Cash for scrap?
Can't we just send up a white Transit up there? Blink of an eye and the local scrapyard will be £50 lighter, and space will be a ton cleaner!
Seriously though, given the amount of money it takes to send stuff into space, surely it would be a better plan to re-use everything we can up there. Remember the old days of insurance companies having their own fire brigades? (not literally, but you know what I mean). Maybe someone should put a plan together for a small orbiting scrapyard, paid for by the satellites' insurance companies, that has sufficient manoeuvrability to change orbit and some sort of capture device to reel the debris in. If you could stick a small steerable rocket on the end of a long wire, with a grapple / net / magnet / sticky gum on the end, you could send it out and pull it all back in again. Weight isn't really much of an issue once you are up there, so it could be miles long. All you need is enough strength to get over the inertia, and if the item is only 10Kg, you could do that with a bit of wet string.
Once you have retrieved a bit of scrap, a grapple arm puts it in the appropriate bin, and you repeat the process with a new or refuelled rocket. The smaller the thing that needs to move, the less fuel you need, and winches can be electric, powered by solar panels and batteries.
Right. All we need know before we hand it over to Special Projects is a name... How about DEL BOY: Debris Engaging Lasso Based On (scrap)Yard.
After all that thinking I need a pint.