High-security seed generation

High security requires air-gapping, where private keys are kept off internet-connected devices; generating your seed this way for a hot wallet may be a waste of time, but is allowed for sake of curiosity or practice.

Before starting, consider these questions:

How secure is your device?
How secure is your software?
Have you procured the most private possible location for this whole process?
Do you have a non-electronic writing device such as pen and paper for writing things down?

I'm ready

Other choices