To me this small, easily-missed object is an example of just perfect design. Industrial Facility, a/k/a Kim Colin and Sam Hecht, designed this minimal, simple and elegant bag hook to mate with the steel legs of Herman Miller's OE1 table/desk (which they also designed).
"We leveraged the OE1 steel table legs to develop a hook that can be attached anywhere along their length - to hold a bag up to 40kg (88 lbs.) in weight. (Normally hooks for bags are mounted to the underside of a table-top or are clipped to it, but they often fail because the fibrous substrate is not strong enough for 'pulling' weight.)"
Here's how it installs:
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