I think lasers are pretty wack when you think about them through this lens. A small, wand-like object in your hand can make light appear from seemingly nowhere. If it’s powerful enough it can set things on fire or blind people. Not to mention larger ones like laser cutters or the LLD, used to destroy missiles midflight. Thats sure to blow some feudal peasant minds
A lift and cars are pretty easy actually. People have messed around with mechanical tools since before the pyramids. They’d be amazed by a car for sure, but they’d understand it’s a complicated machine.