If you have a hole, or a series of holes, to fill in a wall or anything wooden (a smallish hole that a screw needs to fit into), and you need to plug it to put

If you have a hole, or a series of holes, to fill in a wall or anything wooden (a smallish hole that a screw needs to fit into), and you need to plug it to put a new screw in (say for example the hinges on a door need to be changed and you want to put the door in the same place) - a simple hack is to get a wooden pencil, shave it down and hammer it into the hole. Where it stops, or starts to crack under the pressure from the hammer, break it off. Rinse and repeat for all holes. Then simply use some glue in the hole (around the pencil) to make it fit snuggly. Allow to dry and re-screw. At least you don't have to buy wooden chips/strips or anything fancy to plug holes. Good old fashioned wooden pencils (No. 2, e.g.).