So my family was having a storage issue for clothing so I decided to try and make some quick clothing hangars so we make some wall racks. We used just some Big Box clothing poles which gently snap into the hooks. The hooks mount on the wall with these dove tail plastic inserts with some  1-1/4'" drywall screws. If they don't wind up being strong enough for your purposes or your trying to reuse a hole more than once than I suggest getting some twist-in anchors to help.