AI Weekly Challenge: Trick or treat by Flo Sunday, Grace Almera, Andrea R, Alchemyst, AInigma, Roots of Vanadis, Romain Hr, cubes, Maneki Neko, Tamas Antal, Noxferatu, Virginia Lori, bartzabel, rojita76, Anton Kopto, Lesley Christine, alingjoy, ai3_art, Inner Sanctum, speakingtomato, lavista, illustrata, Fanfare Tezos, Mystic World, Polleyovski, and cruxiobale