Mark the end of the roll with a paper clip
Losing the end of a tape roll can render it completely unusable. Most people fold a bit of it to make it easier to find the cut end next time they need it. However, that strategy means wasting a little bit of roll every time you use it. If you want to avoid wasting any tape but still wish to mark the end, here is something you can try.
Attach a paper clip to the tape after you cut off a piece. By doing that, you can both feel and see where to grab the next time you need to glue something together. The best part is that it wastes no extra product. There is no need to fold it over anymore.