I've just released Magic by Candlelight, a collection of magic candles and candle-related magic items for old-school TTRPGs. It has more than two dozen unique items, with rules for mishaps that might occur if a PC tries to use more than one candle at a time.
This supplement is licensed for re-use at your table or in published works. I've posted the original markdown format, so it's easy to re-use. There are also epub, HTML, and pdf versions available.
Take a look: https://mountainfoot.itch.io/magic-by-candlelight