Seat Belt Light Hole in Standard Dash -- Anybody done anything interesting with it?

Thanks for the suggestions!

Ejector button is cool (though a bit goofy) but it opens up the idea of what kind of other cig-lighter-covers are out there.

Shift light may be cool for some with more stout cars, but not for my stock-ish 72 Swinger/318 2bbl/904/7.25 driver.

An extra security measure for starting the car is intriguing as well.

I've looked long and hard at any gauges that might work in a 1" hole but there is really nothing. I don't want to cut the thing up to make more space for a 2 1/16".

For now, it looks like it's going to be a fully original non-functioning seat belt warning light.