I think the tube infrastructure is a bit harder than the physical tube. You might be able to get, say, a VGA monitor but need to hook up a composite-only conso

I think the tube infrastructure is a bit harder than the physical tube. You might be able to get, say, a VGA monitor but need to hook up a composite-only console, and that means a hairball of adaptors and converters. I could see some merit in a generic "chassis" kit-- it would have all the important inputs and geometry controls, but be buildable to drive a range of common picture tubes salvaged from old monitors and TVs. Might even be a chance to upcycle TVs and monitors where the original chassis was crappy and unreliable.