Ask HN: Physical InfoSec tools/habits

I'm looking in securing my life, and while there as tons of privacy and security software tools around, I haven't found a good list of physical tools people use and how they use them for a more secure existence.

For example, putting my cell phone in a Faraday bag when traveling, storing my private keys on a USB key that wipes itself after 10 failed unlocking attempts, and so on.