Costumes: I don’t really feel like doing a whole entry for the Spider. Maybe someday. For now I just want to point out one detail of his costume:
Little spiders on his boots!
Heroes Going to Costume Parties as Themselves:
Batman! And he wins Most Original Costume! (Batman Comics v1 001, 1940)
Speaking of awards and such, after Batman and Robin save an unnamed small town somewhere in America from a cabal of crooks they are honoured with a statue:
(Detective Comics v1 043, 1940)