Here's an update on the few things I've done so far.
As I couldn't find any plans floating around the internet I drew my own in Illustrator. I've printed these and will start making templates in the next couple of weeks.
I was able to get a couple of replica toaster covers off eBay.
I picked up one of the Allparts Rick Style Bridges which I'll make new aluminium saddles for to suit the 12 string.
I sourced some Alnico 2 1/4" Rod Magnets for the pickups.
And I drew the toaster bobbin parts in Illustrator as well.
Fortunately I actually know a guy with a 3D printer, so I drew the bobbin parts in Fusion 360 and sent him the file for him to do a test print.
I need to make some adjustments and then we will print another test bobbin.
I'm only just getting into pickup winding and recently put together a budget pickup winder.