Hey. 2 pages into this thread, I got sick of the flame war from the holier than thou nanny state so I don't know if you got your question answered because I quit reading.
I started with an exercise wrist weight from Walmart and I took out some of the weights to figure out how much weight to use. At 11 oz, it will nag occasionally and at 11.5-12 oz it will almost never nag. I then bought a box of wheel weights (for balancing tires) from Amazon and stuck 11.5 oz to the back and bottom of the right steering wheel spoke (in place of of the wrist weight). Works perfectly and I barely notice them. Isn't enough weight to cause it to pull when not using autosteer so it's pretty much a seamless defeat for the nag.
The first box didn't have very good tape on them and I wound up buying another one. I've had it that way for about 2 years and almost 40k miles now with no issues. Drives me crazy when I'm in my wife's car and I have to keep my hand on the wheel (she also has a Model 3). It's also REALLY nice on road trips.
I think mine are 1/4 oz each because I wanted black painted weights and I couldn't find those in 1/2 or 1 oz. They were pretty cheap if I remember correctly. Should be easy to find with a little searching. Regardless of color, I'd highly recommend painted ones for cleanliness and no worries about rust, etc. I had to stack 2-3 layers of weights in most of the spots to get enough weight. Also, I cleaned the area really well with rubbing alcohol to help it stick.
I took them off briefly when I had my V3 computer installed. Wasn't sure if they would care but I didn't want to have the conversation and I wasn't sure if it would affect the calibration. Used a little Goo-Gone and you'd never know. So, once FSD is officially hands free, I can take them off with no damage.