Soy candles are great because they burn for a long time, and pretty cleanly. These are very simple to make! Lesson I learned: I should buy/use small wicks for such narrow candles.
Here’s a general guide for how to make candles- You can ignore the intense branding in the instructions. However, they do make some really lovely scents- my favorite is Egyptian Amber.
And here is the really great starter kit I ordered from Amazon (In addition to a 5-pound bag of soy wax chips)