Iv'e just been bought a paper log maker, where you soak loads of news papers or tow path mags stuff it into a mold, press the water out and hey-presto a paper log.
The main problem is I made half a dozen on boxing day, just to try it out and I'm still waiting for them to dry out!
Don't even know if they will burn properly,I made these at home and have had them in-doors, so would imagine they'd be almost impossible to dry-out on board.
The idea seems alright and frugal, but time will tell.
The mold or press is made by Black Spur (maybe that says it all)