Little late to the party, but JB was my first movie obsession and first movie prop.
If you have to get any prop from the movie, get the Omega! I got my Goldeneye one for gradution and it is still with me and still as stunning as it was out of the box.
I have an all metal PTP (Police Training Pistol) PPK that I will try to modify. I'll look around at casting it and sculpting the grips. It should be easy but hard if I had to cast it as a metal gun, haha.
Agreed, the Omega is awesome! I have the Planet Ocean that was seen in QoS. It's kind of funny, most people wouldn't give my watch a second look however a person who knows watches would be impressed.