Take a look around the house or any place where you're using doors that don't swing clearly open and closed. Check to see that the door doesn't have a problem with its hinges but is actually a millimeter (or a few) too large on the top or bottom, since this is a perfect use for held power planers. Look for ragged or rough edges on wooden planks built into things like handmade bookcases. Also find imbalances on the bottom of wooden chairs and tables that cause an annoying rocking that is easily corrected by the held power planer. Use the planer to make rabbets (sometimes called rebates), or smooth and even grooves in a piece of wood that can accommodate the edge of a piece of glass, sealant or putty. Thin out pieces of wood used for do-it-yourself jobs if the wood expands from humidity and moisture. Let the wood settle in the place that it will permanently sit and then user the planer to plane the wood to the correct size. Do the work in the place that the wood will occupy if it's feasible. Take a look at wooden window frames that cause the window to stick or open and close roughly. Plane the window frame a millimeter at a time to get the window to run correctly.