Hi there, I need a twisty on/off Keychain Flashlight design, ready for 3D printing a prototype. The cosmetic design does not matter as much as figuring out which components to use, making sure the dimensions, weight, power are right, and a functional prototype... (Budget: $30 - $250 USD, Jobs: 3D Design, 3D Modelling, 3D Rendering, Electronic Forms, Product Design)