In reply to RossKirtley:
The most badazz extendable brush belonged to some guys I met in Squish - they called it the sceptor. It had a couple of different brushes on the end and, the really cool part, a tube that went from the bottom to the top, so you could blow on the holds even if they were way the hell up there. It was also used once or twice to give someone some nutritious air when they were on the rest jugs of a longer problem.
