Not liking the implication that boys can't use thread. I use it very often to make dreamcatchers and rid my house of bad spirits. Black thread is famously used to keep bad energy contained so I have strands hanging from my windows, with the exception of one which I've created as a makeshift "trap." The dark energy can come through this window but is then stuck there because the door to the next room is covered in thread. This then allows me to experiment with my powers in a relatively harmless way.