Does anyone know of a way to 'image' the eMMC of the RK1. I have rebuilt my RKs multiple times with various issues encountered along the way as I learn and sort out various issues. Having to start from scratch each time is a PITA. I'd like to 'save' the state of the RK1's eMMC at a point in time where everything is good to go, and then start rebuilding from there.

I have not done this myself but if you access the node’s file system, you could perhaps just dd it? https://docs.turingpi.com/docs/tpi-accessing-nodes-filesystems

Ahha. Very interesting. I will most certainly give it a try, as it sounds like a very good way to save those images. And therefore, restore them as well.