Storage drawer retainer (23/12/11)
I use lots of storage drawers (the type which slot into a wall-mounted cabinet) for components, screws, nuts etc. However, if the drawers have bags or things sticking up, these nearly always jam against the underside of the shelf above when the drawer is removed. Fortunately, a simple piece of cereal packet solves the problem. Just cut a strip wide enough to cover the whole of the drawer, bend the edge at the front down, and cut a bit out the back so it can be lifted with a finger. This presses down on whatever's inside the drawer, letting the drawer slide out smoothly under the shelf.