Got a bunch of USB thumbdrives, and you can't remember what's on them or what you got them for?
Get a small box of string label tags from a stationery or office supply store. (Avery calls them "strung" label tags.) For each thumbdrive:
* thread the string loop knot through the keychain hole,
* thread the tag through the loop anywhere behind the knot,
* pull the label out to close the loop and knot at the thumbdrive, and
* write the thumbdrive's contents or purpose on the label.
If the tag wears out, if you change your mind, or if you want to move the tag to a new drive, pull the free ends of the string and pull the tag back through the loop. It might be quicker than going to get your scissors.