So there we are and she knows I pick so I asked if I could try something (remember kids: always get permission before picking someone's lock.) I clipped it onto the end of my Bogota and used it as a weighted tension wrench! Worked great too!
just a Bogota with no added weight

Bogota with weight clipped on to it

payday! (and yes, my triple rake Bogota is trapped inside in this photo)

I found more of these little things on ebay, http://www.ebay.com/itm/231501430402 and I'm wondering if I could buy the set of them and shave them down to smaller sizes which would represent less or more weight as needed. I also thought of just taking a small piece of wiper insert and bending a 90 in it with 1 inch of metal on each side, just enough to insert into the keyway and just enough for the gator clip to bite onto.
This is purely an experiment for fun, not saying we should not use both hands for picking, but it sure is a handy item to throw in the tool bag.
Squelchtone