I'm fed up paying for cans of air in order to clean the interior of my PC. The cans don't last long, nearly give you frostbite when you hold them for too long and end up running out before you get the chance to finish cleaning everything. So I've been thinking of buying some kind of mains air pump. Has anybody here used anything like that to clean their components? Any recommendations for something like an air pump that inflates paddling pools, mattresses, tyres or whatever needs a good supply of air, costs less than £10 or thereabouts and plugs into the mains? And I've been thinking about sticking my keyboard in the dishwasher too. Seriously. The air can gets some dust out sure, but I've got this urge to just throw it in on its own on the coldest wash without any tablets.