Hey 00Dad - feel free to add anything I've missed
While a JW may not be reproved or disfellowshipped for the following list of written or implied rules, should they do any of the following they will be viewed as 'weak' or 'bad association' in the congregation.
Extracurricular school activities
Joining any organization other than theirs
Bringing a recording device or taking notes during a judicial committee
Education beyond high school unless it’s for the WT’s purposes
Getting a piercing anywhere other than the earlobes
Tattoos
Accepting a blood transfusion
Giving blood
Eating foods with ‘by-products’ in the ingredients, esp. hot dogs
Celebrating any holiday or birthday, including Thanksgiving and Mother’s/Father’s Day
Yoga
Masturbation
Certain sexual acts even with your spouse
Mentioning a disfellowshipped person in a prayer – even in private
Having your palm read
Serving in military service of any kind
Having a job at the UN
Reciting the pledge of allegiance, or local equivalent
Children must abstain from anything involving any holiday at school or elsewhere
Voting
Running for class President
Carrying a firearm, even as a policeman or security guard (some areas are OK with hunting, however)
Dating or marrying a non-Witness
Dating before the age of 18
Breaking off an engagement
Divorcing your spouse if they’ve committed adultery but you’ve had sex with them after they’ve confessed
Attending another church
Hang gliding
Sky diving
Bungee jumping
Paint ball
Smoking or chewing tobacco
Owning a cross, whether as decoration or as a piece of jewellery
Maintaining friendships with non-JWs
Studying the Bible or Watchtower literature in small groups in someone’s home If you're getting married in a Kingdom Hall, only WT music is permitted (no classical pieces allowed to walk down the aisle)
Wearing trousers to bethel, a meeting or an assembly if you’re a woman
Wearing short skirts at any time (anything above the kneecap)
Wearing ankle length skirts to JW functions
Wearing a skirt made of denim to JW functions (including a bethel visit)
Growing a beard if you’re a man
Sideburns for men must be kept short
Wearing anything other than a white shirt if you’re a man giving a talk
Men giving talks must wear suits – no sport jackets
Women giving talks can only be in twos and speak to one another, never from a lectern
The length of men’s hair must not grow past the top of their shirt collar
Reading anything deemed to be ‘apostate’ Owning a Ouija board
Hypnosis - whether as a therapy tool or for entertainment
Dying your hair if you’re a man
Wearing makeup of any kind if you’re a man, unless you’re ‘acting’ in a drama at a convention
Attending a congregation other than the one assigned to you based on where you live without approval
Stringing lights on your residence for decoration
Costume parties – even if only JW’s are present
Hiring a magician to perform at a wedding
Saying hello to a disfellowshipped person
Questioning doctrine
Not turning in a spouse, family member or friend to the elders if any of the above is violated