Made with one of the many H&K hooks I have sitting around, a scrap of the Leo Zulueta TEVA webbing, and two pieces of Velcro. Oh and a meter or so of upholstery thread. And maybe a half hour of time.
When I wear it on my belt I never undo the Velcro, but for attaching to PALS on a pack it’s necessary.
While I intended it mainly for keys, just about anything else can be hung on it to prevent loss.
Can be worn on the belt to keep keys secure.
Or placed on PALS webbing. And the hook can be placed at the top or bottom.