Actually I have found that an air compressor is your best friend. It's amazing what you can attach to one of those. I have nail guns (no pounding your thumb) a paint sprayer, polishing wheels, wire brushes, grinding stones, a chisel, a sort of mini jack hammer for breaking up stones and concrete, cut off wheels for cutting metal and pipe, you name it. Really, i have found it one of the best investments i have ever made.