It’s an old trick but it works perfectly. Fire starters made from egg cartons, dryer lint and sawdust, covered in wax.

My SO is is nicely collecting dryer lint and candle remnants over the year, so I can make some when “winter is coming”. It is the hell of a mess to make them but it’s also easy, they cost nothing and burn for half an eternity. Always remember to put in the dryer lint as the last layer, so they keep together well.