Looked at this again today. To do this requires a step down converter (so as not to blow the circuit fuse), specifically a high output as most are 15w at best. I was wrong previously, MagSafe is 20w. So need a specific high output solution such as the 24w
here combined with a female usb-c to male usb-a like
this. So will need to get these and should be in business.
I’m considering cutting a hole in the plastic so only the rubber is between to give the best connection. Should be awesome. Eventually.