Ranger Bands are great gear organizers, esp for paracord, twine, zip-ties, etc.

Somewhere I saw a custom knife-maker that supplies ‘em as additional security for a belt knife – a great idea that I have stolen for my Grohmann.
Just place a RB around the sheath & thread the knife lanyard knot through the RB.
Additional retention but still easy to draw out the knife when you need it.

I plan to try RB with paracord to adapt a kydex neck sheath to belt carry – could be either vertical or horizontal carry.

Motorcycle tubes also great if you want larger diameter RB.