Got my wife a Philips picopix for doing murals on kids bedroom walls... She doesnt airbrush but paints by hand. The projector is smaller than your average mobile phone can take images and video from usb device. Connects to anything with AV via a 3.5 mm jack. Its not HD or super hi res, but for getting a image onto a wall, its spot on. Got it from Maplin at £200, shop around it is probably cheaper elsewhere.