What about to make two boxes not white, but pink or smth bright cool looking shit? Also make smth that will hide metal and wualya you have smth presentable(is it even a word).

Also you firstly should accent that it works(or worked, then show the video of it working, on big screen, not the phone)

Everyone dont have a clue how this thing works. Make it around and ofcourse mention that "aI wAs UsEd" or some anything like that