Not wearing a sport jacket or suit jacket in service
not wearing the proper overcoat in winter for service (that may be the dumbest one ever)
neckties too colorful
wearing jewelry... necklaces/bracelets. Okay for the sisters, not for the brothers
t-shirts with rock band logos
rock posters on bedroom wall
hair too long
hair too short
facial hair (my mustache wasn't within Bethel regulations)
facial hair another time (came back from vacation with a week old beard - just stubble really, nothing heavy) was refused to let read at the book study