There are numerous uses and reuses of wall hangers. Apart from their actual intended usage as a coat hanger, these can be used for hanging a variety of items that may otherwise damage your wall. Moreover, you do not need any special tools to attain the best results.
Similarly, packaging, using double-sided tapes, masking ones or simply the sticky putty, all these can be used easily and effectively to hang lightweight frames, wrapping paper, fabric, etc. All this is possible without risking the paint to get damaged without pulling up. Similarly, the hooks must have a hole in the front to screw the same effect through the wall. This is important to hold the hook up to your wall.