I assure you that this is not the beginning of a fastener-related standup routine.
While working out at the gym, I saw a fastener that looks like a metal zip tie, with a screw to tighten it. Two pictures below. This can be useful for me in some of my projects. Any idea what it's called and where I can buy it?
It's a hose clamp. Any hardware or automotive store carries them in the US.