I don't do anything like the same amout of it as the guy in the youtube video, but the amount tools we have in common is uncanny - right down to the identical orange-handled angle cutters.
I find a digital vernier essential too, for accurate measuring. I also have a variable angle, somewhat smaller than the speed square shown in the video, which does right angles but also other angles and hooks easily over the edge of the cutting mat. A surgical scalpel is effectively an x-acto knife.