17 May 2021Hollister Biosciences (HOLL.C) Goes Heavy Metal to Create New Clown…Kieran Robertson HOLL.C Hollister Biosciences (HOLL.C) and Heavy Grass, a California-based cannabis brand, have partnered with Slipknot co-founder Shawn “Clown” Crahan to create special-edition HashBone packs featuring six half-gram prerolls and matches…