A Bosotile was a complex art form created by the Rodulans. In 2366, Kivas Fajo owned the first one ever created, and claimed that it was centuries old. (TNG: "The Most Toys")
A similar Bosotile was kept in storage in Deep Space 9's assay office in early 2370. (DS9: "Necessary Evil")
Another Bosotile was on display in the Symbiosis Commission building on the Trill homeworld. (DS9: "Equilibrium")
Bahrat kept a Bosotile in his office aboard the space station close to the Nekrit Expanse. (VOY: "Fair Trade")
In the script for the "The Most Toys", this bosotile was said to be the very first one created by the Rodulans.
The Star Trek Encyclopedia (4th ed., vol. 1, p. 71) also associates it with the Rodulans, and offers the alternative spelling "Basotile".