Replacing a rear innertube

You could patch the tube without removing the wheel, Park make some pre-glued patches which are about the simplest way of repairing a p_nctr in the world.

Other than that you could switch to an armoured tyre such as a gatorskin, check you tyre pressures are optimal and don't ride through broken glass and potholes.

Glueless patches are awesome, we sell these at LMNH and they're great.

I got a puncture on my Dutch bike once and as some of you will know it takes a matter of days to remove the rear wheel of a Dutch bike, so the glueless patches were a life saver.