Ignition/starter /accessories switch boxes.... Any ideas welcomed...

I used the ash tray as you stated,removing the lighter and cup.With a little work it can be done and still have the door close if you want to hide the switches from sight.

that would have my vote, buy an ashtray of ebay or here or wherever and gut it
then weld in a face plate and install the switches in there, very 007

my only concern would be getting your fingers under the actual switches to actuate them


other option would be a radio delete plate ?