I'm designing a new headphone for a University project and I have a technical/engineering question. As I need to research and explain the building process, I appreciate if anyone with design/engineering knowledge could help me. The headphone will have an external component that will be attached/detached on and off the earcups. This external component weight will be about 50 g. I need to know what is the most suitable type of fastener to attach this component on and off the headphones, frequently and easily, without damaging the headphones earcups. I read about screws, latches, pins, push-on locknuts, clips, etc. But I have no idea which one would be the most appropriate, safer, and practical. I will be forever grateful if you can send me a good explanation of the best method to use. THANK YOU!