Off the top of my head - there's a Swamp Thing story, Gaiman's Hellblazer story 'Hold Me'. There's also a weird strip featuring this sentient rag doll who can change shape and who is ideologically rooted in the peace and love philosophy of the 1960s - I guess he's an obscure DC character. That story also stars Chester the hippie who made occasional appearances in Alan Moore's run on the Swamp Thing.
