Recently I built a small wood burning stove from an Ikea stainless steel drainer following the method most people use to make one, ie cut a rectangle out of it with a Dremel so you can push fuel in once it's going. Loads of vids on YouTube if you want to investigate further.
It works remarkably well, taking 8 mins to boil 750ml of cold water once a good bed of embers is established. I used 2 tent pegs to support my Alpkit Mytimug
Have now bent a clothes hanger to make pot support
I was in an outdoor shop recently and saw this new bio ethanol gel fuel made by Fuel 4 ..
It can be used a substitute for meths in a Trangia/pepsi can type stove so I bought a £2.50 sachet to try it out...
I poured it into the dimple on an overturned pepsi stove I made ages ago, popped it into my Ikea burner, lit it and turned the timer on. It took about 9 mins to bring about 0.5l of water to a boil, not bad, no soot on the pot like meths and no smell either.
Nice clean blue flame...
Verdict: handy to keep as an emergency fuel if no other free bio fuel (ie wood) available.