If you are curious, there are 2 methods in which a normal person (albeit pretty geeky) could generate measurable amounts of Au-197 from Hg-196.
1.) Grab a good proton emitter like Polonium or Radium, and mix it up in a blender with heap of a low-z element, like Beryllium or Lithium. You might get up to 1x10^9 neutrons per second if mixed right (although you'll prolly want to throw away the blender, it will become activated and very unsuitable for making smoothies afterwards)
2.) You could purchase a bar of Californium-252, which throws out neutrons all by it's lonesome. For around $25k, you get a little bar with a half life of about two and a half years a that will emit a mean amount of 1x10^8 neutrons per second. Not cheap, but feasible.
I'm sure there are some I haven't thought of, but that ought to get you started. I supposed you could also open a ton of smoke detectors and take out the Americium and mix it into a matrix with lithium (like 2 above), but that would probably take a long time.
Have fun, and always remember - for shielding, cover your high-z lead shield with a good beta absorber (like wood).
Cheers.