( I'm certainly not (touch wood))
I presume you were being humorous as touching or knocking wood is a pagan superstition to ward off malevolent spirits.
I used to salute magpies, but living in the country and travelling early to work means I see a lot of them, so gave up doing it. No more bad luck than usual.
I don't walk on cracks or white lines in car parks.
When I've hosted dinner parties and have had 13 guests coming I've made up another place just so we don't risk bad luck.
I do salt over the shoulder if I spill any.
There are many that I do. Basically I'm fucked.