kelar419, can you just pack any valuables in your carry-on luggage? I generally don't lock things, but will sometimes wrap them with packing tape as a precaution against the zippers coming open with rough handling. Packing tape would be easier to get off at your destination than those plastic ties.
I guess I just figure that, with the zillions of suitcases out there, who's going to want to steal MY socks? It's more likely the whole thing will get lost, probably!
So let's see...the dirty clothes, the pocket knife, and the knitting needles go in the suitcase. The passport and diamond tiara go in my carry-on bag. This is confusing!