I have used pliers with a needle and thin repair wire to sew boot soles, loosed
by fire, back on.

Vise grips are good for aid climbing to help remove small driven-in protection.

If you have pliers along, like Doug says, they can be used every day as pot
grips.

Maybe some use like a hemostat. Maybe a hemostat could find some use as
pliers?

Fisher people make use of pliers a lot.

Pulling teeth?

Skinning a pig?