Many of the items in Finders Keepers' inventory are objects previously owned by fairy tale characters. Finders Keepers was first seen in Season 25 (Episode 3136) where Ruthie introduces Big Bird to Little Green Riding Hood, who is angry about her her sister's fame.
Included in her stock are ten pieces she bought at the 1993 Monster Art Show, but was unable to sell as of nearly a year later.
Finders Keepers was dropped after Season 29 with the Around the Corner sets, but Ruthie still made some appearances until Season 32. The last appearance of Finders Keepers was in The Adventures of Elmo in Grouchland.