without looking scruffy?

I am thinking like Michael Buble

Don't shave

suck on a magnet and dip your chin in iron fillings

get the i-trim stubble

Simple. Don't shave. I'm currently sporting the unshaven look.

Dumbest post ever?

Don't shave for a few days, then use one of those electric trimmers to crop it down to a neat/reasonable length and use that every few days as required. You'll not be clean shaven, but you'll not look as though you just haven't bothered either.