hahaha I've actually used a hairdryer to get a 617 to start before...
Had an 82 300D I took home in the winter and was about to drive to work the next morning and it did not want to start. I knew it had some dead plugs so I had left the blockl heater plugged in overnight. Well, so then I learned the block heater element was burned out.
Strapped up a hairdryer directly over the opening in the filter housing and let it run a few minutes then fired it up.
On another occasion I've used a torpedo heater infront of the radiator to heat one up enough to start (but only when the hairdryer won't work
)