One of the pieces of equipment that I find useful for a variety of jobs, is a two inch shim or spacer. I'll use a spacer to introduce a queen with a cage, feed sugar or fondant, and even provide "hangout" space above the inner cover. I'm not talking about an "Imrie shim" that has a entrance notch, which many use between boxes and might as well be called a "Burr comb" shim. I'm talking about a spacer that can be used above the inner cover or below. (If used below you need to remove as soon as possible after the need passes as they will fill in the space. Spacers can be made by cutting down older boxes, or with scrap wood. Once you have them, they can be very handy.