Park makes a travel double open end wrench (RW1) with a 32 mm headset opening (1" threaded headsets only unfortunately) on one end and a 15 mm pedal opening at the other. It's slightly thicker than a cone wrench and about 6" long so it's light and easy to store. It even has holes in the handle so you can mount it under a water bottle cage.
It loosen pedals that aren't torqued way beyond necessary and will tighten them sufficiently for anyone. DieselDan is correct, there is no reason to torque pedals beyoud "good and snug". Why bike shop mechanics and some home mechanics tighten them so hard is a mystery.