This is an old idea I've had for a while, but I've had some new ideas recently that have been nagging me. With May 4 coming soon enough, and the next Avengers coming out at the end of April, I temporarily shelved the 5 other incomplete projects I've got going right now to spend the weekend designing, printing, redesigning, and reprinting the shell for this saber.
The next step is designing the gems. Each gem will activate a different font and blade color, when they are all activated together it will go into "INFINITY MODE" (all caps required). There will also be some surprises. This will obviously require totally custom electronics.
I'm also considering making a Thanos inspired tabard to go with it.