Another good use for empty tissue boxes is to carefully open one side (of the square boxes-these are the 3" wide and about 5" tall kind), take a roll of toilet tissue and work it in your hands until you can get the cardboard center out, then find the end of the tissue roll down in the center and pull it through the top of the tissue box. Then use clear tape and tape the opening shut. We call these our "retirement" tissues. Goes a lot further than a box of tissue.