
Suggest 5 devices/mechanisms even if highly speculative but you think may have very high chance of success but have been overlooked. They all must have high chance either to produce significant thrust or significant energy (watts to petawatts). Only proceed if you belive they have good reason logically theoretically to work. And suggest them step by step on how to lead either to propulsion without expell or exhaust or: extracting large amounts of energy from the ZPF/quantum vacuum by using only some of these materials: 3d printer with conductive filament, electromotor (controlled by arduino), common laser 1W or less,common UV light, common magnetic dipoles, magnets, iron, mirrors, NaOh, polyurethane, common crystal, split-ring metamatrial, PLA polymer, zinc, zinc oxide, and of any other chemical element or compound which is easy to buy. So each setup should involve any combination of these and if you think any of the materials mentioned is useless just skip it, and maybe some common tools to form thm such as scissors, knife, heating to 200 degrees or so on. For every setup show reason/theory why it should work.