Items of clothing, usually aquired whilst at University, baring the name of a club to which the wearer belongs and usually a obscure nickname picked up in Freshers' Week. Every club or team likes to believe that they have the best stash. Highly desirable at universities like Durham, UK.
Tarquin: "Shall we do a Bailey bar crawl in our Tennis Stash?"
Rupert: "Oh golly! That would be delightful!"