Battery replacement device?
 

Not really travel related, but I figure people will know if this exists. My gas fireplace has a receiver for the remote control that takes 4 AA batteries. The thing practically eats batteries, however, even when it's not really being used. Rather than deal with replacing batteries (even rechargeable ones), is there a device that might look like four AA batteries but which I could plug into the electrical outlet under the fireplace and that could provide the 6 volts it apparently wants?

If you're handy with electronics, find a cheap 6V DC output transformer, cut the plug off, and put a small alligator clip on each lead, then connect to appropriate terminals in the box. There's probably a more elegant solution though :)

Yeah, that had been my first thought but then I realized a home inspector would probably not like it if/when we sell the house.

This looks like it might work for you:
https://www.lightbulbs.com/product/gerson-93977#

I never knew such a thing existed! Apparently, folks commonly use them for Christmas decorations which require batteries. I could probably use this for that electronic basketball game which requires 3 AAA that my kids got as a white elephant gift

Easily solved ... remove alligator clips and reinstall batteries if he even brings it up. This isn't the sort of thing a home inspector gets worked up about. Low voltage stuff generally is ignored.

AA Battery Eliminators

Specifically, 4 AA Cells, 6VDC - AC Source - AA Eliminator

Thanks all. I wound up buying a 6V power supply with a DC barrel connector, and a barrel-to-alligator clips adapter. TOtal price was $15 - much cheaper than the actual "battery eliminator" devices.