F. George McDuffee wrote:
I ran into the same thing when I went back to Walmart for another
coffee cup warmer.

They now call these candle warmers to heat the aroma therapy
candles where flames are not allowed or where the soot given off
by the candle when it burns is objectionable.

Look in the Artsy-Fartsy section. As the clerk for a candle
warmer if you cant find one. Big notice on the package that
these are not to be used to warm food or beverage. This may be
why they aren't sold as coffee warmers anymore.

Aha! I'll go searching this weekend.

Thanks!!
Pete