I'm cheap and I refuse to pay $70 for a proper dome light. Cringe if you will, but I don't care that much about keeping my Amazon completely stock.
I'd searched far and wide for aftermarket dome lights, and found nothing that looked appropriate. It's also surprisingly difficult to find an aftermarket dome light with a three-position (off-on-door) switch.
Shamir and I were at the wrecker's last weekend, where I poked my head in a first generation Suzuki Sidekick and spied the perfect dome light. Modest, minimal, with a three-position switch. I boldly drilled a couple of mounting holes for the new light in the original dome light mounting plate (not through the roof), and installed it with self tapping screws.
It's not original, but the new light is functional, and more or less fits the mid-century styling of the car. I think it actually looks quite dapper. (I just hope Jan Wilsgaard doesn't find it an offense to his sensibilities.)
Next, I need to shampoo that headliner...