Simple painting pads, they measure various sizes. Available any where. These leave a minimum of finish texturing. The spray coat can be done with an aerosol urethane. A random orbit sander will leave swirl marks that will have to be removed by straight-line sanding, either by machine or elbow grease. I use a random orbit to get the wood ready for a finish, up to 220 grit. I then use a dark grain filler, which makes the swirl marks easily visible. I then use a straight line sander to take off the excess grain filler, and the swirl marks with it.