See also, matchbook and matchbox museum:
(Given that he audited classes for years, this very much strikes me as a class project based on his interests...)
https://en.wikipedia.org/wiki/List_of_Community_characters#P...
And another of beer coasters from the bars around Barcelona: https://antennebooks.com/en-eu/products/posavasos
EDIT: Here's an Atlas Obscura article about the museum itself[1].
[0] https://web.archive.org/web/20050613084710/https://moisttowe...
[1] https://www.atlasobscura.com/places/moist-towelette-museum
xbar•14h ago
pseingatl•13h ago
dredmorbius•11h ago