Arthur C. Clark once said "Any sufficiently advanced technology is indistinguishable from magic". What technologies do we have today that would look like magic to people from the past?
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
I mean we gather these black rocks called silicone and refine them, then we cut them to plates and inscribe them with microscopic runes using light and very secret mixtures. Next we use lighting on it to make it think for us.
Even more simplistic: we take rocks and etch runes onto them, shoot them with electricity to make them think.
Also, I think you meant silicon. Silicone is what flashlights are made of... Which would also blow the minds of less advanced cultures: "You craft soft holes from rocks mixed with glues and you fuck it?"