Multi-tools that pack a punch, and what to look for when buying one

At the end of the handle of this pair of collapsible pliers is a glass-breaker bit, which can be pulled out and replace with screwdriver bits.

Carrying a multi-tool is almost mandatory while outdoors.

Nary a day goes by out in the wild without encountering something that needs cutting, screwing, plucking, prying, snipping, whittling, pinching, crimping, sawing, filing, scraping, hammering, chiselling ... you get the point.