My son is 9 and has high functioning ASD. When he is at home he likes to stim with a piece of thread, he wont do it outside of the house incase his friends see him. He is ruining our towels, hems of trousers, curtains anywhere where he can grab a piece of thread. I've bought him fidget spinners etc but he still carries on. I've told him countless times to stop or recycle the threads but to no avail. I know its a ridiculous thing to post but I've just found his new jogging trousers with the hem ruined again. Any tips?