Yeah, the Pi has a very interesting looking mini-screen addon too.

https://www.waveshare.com/product/cm4-disp-base-2.8a.htm

I think being able to switch between a phone and desktop is a great use-case for SBC. Important to be able to attach a power bank and the real bottleneck to adoption: a telco addon.

Some sort of vibration absorbing case would also be great with a few different varieties around too: https://www.gttwireless.com/raspberry-pi-outdoors/ https://github.com/NebraLtd/IP67-Enclosure

You could take that SBC with you on a bike, car, around the home, to the worksite. Even a mobile web server for temporary gatherings placed on a high vantage point. Signage is also an important area for SBCs.

I'd wager on Polymarket that Apple will end up doing something in this space.