Most bread bags come with a small piece of plastic that keeps the bag closed and the bread fresh. Most of the time, throwing them out is easier than keeping them. They can actually be really useful in certain situations. For example, finding the end of the tape can be frustrating. Bread tags can help, so you'll never have to struggle with a roll of tape again.
Once you've found the end of the tape, stick the bread clip onto it. All you'll have to do next time is grab the end of the clip to unroll your tape.