Fuel other than wood for rocket stoves.

Besides wood, what other fuel has anyone else used with success in rocket stoves or mass heaters?

Hello Paul!


There are lots of options.  
We burn a lot of cardboard.   Walnut shells work great.   Pine cones are good too.  

I also burn just tiny twigs from bushes.    

The smaller the diameter of the wood, the hotter the fire will burn.   Because you are storing the heat in the mass this means you can heat your home with a very small amount of sticks and twigs.