Ventanan thimble

A Ventanan thimble

A Ventanan thimble was a rare antique.

Captain Jean-Luc Picard owned a Ventanan thimble from the early Lapeongical period and kept it in his ready room aboard the USS Enterprise-D. In 2368, while visiting him there, Kamala identified the thimble and its era of origin correctly. (TNG: "The Perfect Mate")

This was presumably associated with the reference to Ventanan archaeology discussed in the episode.