It burns, so it can be used in small stoves and lamps. Some camping equipment is designed to burn meths.
It cleans most kinds of ink off non-porous surfaces. For example, it can remove ‘permanent’ marker from metal and plastics. On wooden surfaces you should take care, because it can also remove some ‘finish’ (surface treatments, like varnish or wax).
It’s also useful in household cleaning. Home recipies for glass cleaner usually include some meths.
