Just a quick tip for any DIY-ers out there. Sourcing parts is one of the biggest challenges when building a 35mm adapter. If you are building a vibrating adapter you need a mini vibrating motor. Both a pancake motor and a tube-style motor can work. If you don't want to spend any money on a motor then open up a discarded cell phone or pager(whats a pager? :)). You will most likely find a motor that is small and suitable for your 35mm adapter project.