Because painter's tape is designed to protected the existing paint or wallpaper, it makes sense to use it under double sticky tape before hanging posters or drawings on a wall. This makes the removal effortless and the wall protected against damage!
Cut a slit into a toilet paper or paper towel roll to make a wrapping paper cuff! (keeps the paper from unrolling everywhere). For smaller rolls, you may have to put a piece of tape on the outside of the toilet paper cuff to make it fit.