If I was a inventor a would invent a cloak suit that would work as a better more advanced camoflage. The basic is pretty simple but very advanced and nearly impossible to make.
First things first: Invisibility. You need to have a crystal like material that can somewhat bend the light around you. You won’t be 100% invisible more like 60 or 70% but that’s good enough. Second thing: It needs to be flexible enough for you to be able to move around, so it can’t be normal crystal but more like a plastic version. and the last thing, energy thats just to complicated.
I would also make a tre dimentional GUI/OS because 2d is just to 20th century, Right.
It would be made with two projector behind you like in the theater and two hd cameras with a wide field of veiw one by each projector.