My best McGuiver moment was returning from a business trip with a colleague and trying to start his Acura to no avail. Plenty of cranking but no firing. A quick look under the hood revealed sparks jumping on the distributor cap (remember those.) Closer inspection with the flashlight in my bag (this guy had absolutely nothing even remotely resembling a tool in his car) revealed a hairline crack.
So I start thinking, what have I got and WWMcGD? I took some chapstick, smeared it liberally in and around the crack. Quick turn of the key and we were off! Lasted long enough to drive 20 miles or so to the dealer where he got it replaced.
Chapstick- never leave home without it!