So just have the adapters plugged into the Pi all the time. I mean, what else would you use them for? Problem solved, no drama.
You're not wrong, but it feels like an unnecessary problem to have, stacking a couple of full size HDMI ports would have been nice, or just putting a single port on since having two on a Pi is kinda unnecessary.
I used to lose the Micro to C adapters all the time, I lost the C to headphone for my OnePlus6T while travelling and was unable to find a replacement so no headphone use for me.
Also, I have about 12 Raspberry Pis, as many display devices, a dozen or so other HDMI devices such as consoles etc, and tens of normal sized HDMI cables lying around and they're all compatible.