Reader-added tags include "Relics", and "Legendary Item", and "Cont(am)in(u)ation" (originally punning the phrase 異物混入 (isei konnyuu, contamination), with 遺物コンティニュウ (isei kontinyuu, relics/remains continue)).

15 years down, just another 85 years of seasoning and you'll have a closet full of large-breasted tsukumogami CDs!