About 50-50 I'd say. I did (custom) cases for electronics, lampshades, replacement parts like keyboard feet and so on...
Here are a few impressions of the more practical things I printed so far:
https://mastodon.social/@fribbledom/101744475918909614
https://mastodon.social/@fribbledom/101910775006173197
https://mastodon.social/@fribbledom/101737497467684981