The Doohickey. A staple of sling support. Use it to secure excess material, to tidy up your sling during storage, to stage your sling for use, to secure tactical treats to your rifle, and more.
Some might call it a Slack Tamer, or some other sort of goofy name for an administrative device, but we think that's indicative of a lack of imagination.
Each order comes with 2 Doohickeys.
$3 off when purchased with a sling