The perfect setup would be an M1 iPad that runs something iOS-like when it is in tablet mode and then switches to macOS when in laptop mode, keeping the apps running. At least, one can dream…
Technically we could duct tape an iPad to the back of a Macbook Air?.. Sure, the CPUs are needlessly duplicated and so is the price but the UX and the form factor seem close? Obviously tongue in cheek, but also a fun thought experiment.