These are some simple wire shelf clips/mini hooks.

Wire shelfs are wildly variable in their "height", e.g., these will clamp on fairly well on some shelves (and sections of shelves) but if you slid it over even a little, they don't "snap", they just hang, and the bottom clip part serves as a lever.

We originally printed them out so we could hang t-squares and plastic bags, and they're great for this, and will support a fair amount of weight. There's a lot more to be done with them.

• Clip No4: Hook at the top. Available as single or plate of four.

The hooks are designed to fit around shelf wires that are about 0.22" diameter, with the top and bottom wires measuring about 1.12" apart, which is what we get at the Home Depot (the same shelves the Wire Shelf Stacking Connectors are for.