Some fun and simple costume ideas:
Artist -- Smock, beret, paint brushes
Jazz Musician - - Black pants, long sleeved jacket or sweater, a musical instrument, and a handkerchief.
Chef - - Apron, hat, mixing bowl and spoon
Deep Sea Fisherman - - Raincoat, boots, and hat; net or a metal bucket
Construction worker - Jeans, long sleeved shirt, hard hat, tool belt
Highland dancer - Tights, plaid skirt, plaid scarf long (to run from one shoulder to one hip) and a beret.