This hack is really very simple. If your remaining wrapping paper roll is small enough, simply slide the used toilet paper tube over it. If the tube as it’s made is too narrow, cut a slit lengthwise from one end all the way through the other, so your tube has an opening to work with. Stretch this opening just wide enough to snap the tube over the wrapping paper roll. Both of these methods will hold your wrapping paper in place so it doesn’t unravel. For long rolls of wrapping paper, you can use two tubes.
However, this method works best for wrapping paper that you store horizontally. If you store wrapping paper vertically, the toilet paper tube may simply slide down the length of the roll, allowing all but the bottommost section of the wrapping paper to fan out. This could still leave a high potential for wrinkled, crimped paper or even possible tears, defeating the purpose of the tube hack in the first place. The only way to avoid slippage in a vertical hold would be to tape the tube to the paper or use a rubber band, although these options may cause tears or wrinkles as well. A horizontal storage solution, either under the bed, on a high shelf in a closet, or in another designated space, is the best option for this hack.