Aluminium One litre water bottles are available from Tesco's priced at a reasonable £ 4.97 and Half litre at £ 4.67. very similar styling as the popular "MSR" bottles.
Regards, Sparky
Nothing at all - the unvarnished ones are used for fuel, but shouldn't be used for drinking water. If they're varnished on the inside, they should be usable for fuel or water.
Good point. May be worth storing some biro refills in there just to make sure.
I suspect that the varnish isn't going to be as big a problem for a stove than a carb, so it shouldn't be too bad overall. You'd have to be pretty keen to try and store bike fuel in containers this small.
I guess that there won't be many people who would want to use a bottle that small for fuel and then use it for drinking water. If they did, I'd be more worried about the residual fuel than the aluminium anyway.