The question I think you'll want to ask yourself is this:

What sort of technology would impress or startle a magic-user?

The answer, I suspect, depends greatly on the level of thaumic advancement. The Arcanans in David Weber and Linda Eder's Hell's Gate series, with their magic artillery and handarms, and their legless tables, would have a different answer than the wizards of the Disc, or of Harry Potter, or RuneScape.

I don't have the answers. It just seemed like something to consider.

I swear when I started it this was going to lead to a Magitek trope link, but I've lost that path.