I recently bought a set with a Windup Key (piece 29979/79812) and took note of its holes since they're slightly smaller than the standard rod / minifig accessory diameter.

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After an (admittedly brief) look through my own pieces, I couldn't find anything that fit perfectly in them. The closest I could find are minifig hands, though the holes are slightly too large for them.

This made me curious: are there any legal connections for the windup key's holes?


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