Warded Pick Set
This set of 5 Warded Picks will open up such a vast array of warded padlocks. A huge percentage of "warded padlocks" are susceptable to a warded pick attack since most warded keyways are of a very low security level. I do not carry warded picks on my person (on my First Line Gear) but I think you'd be crazy to build out a 2nd Line Gear bag without them.
They are so simple to use that you almost don't even need a lesson. After you know that you have a warded-style padlock in front of you, just shove the tool in, twist it, turn it, twist it the other way, and jiggle it around, and eventually most warded padlocks will fall right opened for you.