Rulers have banned a lot of things, some for good reasons, others because they are killjoys. Here are 30 banned weapons and spells for the lawbreakers amongst your PCs to use-if they dare.
In ancient China, women bind their feet for cosmetic reasons, resulting in them not able to walk without help and walking in a shuffling gait.
Possibly this can be modified such that people do it for less stupid reasons.
Disclaimer: This is NOT a racist remark since I'm Chinese myself and hence entitled to freely judge Chinese customs. NOT sexist either since I'm female as well.