The first time I ever encountered a cajon was approx half a decade or more ago
played onstage through the PA at a Kerfuffle gig.

They were a young band - late teens / early 20s...
so without any knowledge or thought I immediately presumed it was a cool retro rootsy looking
midi percussion trigger device.

After the gig I had a quick chat with the young lad playing it;

[he's now grown up and moved on to much bigger career.]

When I asked him if he'd constructed it himself,
and what midi triggers, and percussion sample module he was using..
and he replied it's purely acoustic full of springs and tinkly little bells...

That's when I learned the lesson not to presume all young players
are completely into modern music technology...😳

Though obviously, some kind if internal micing must have been involved....