I must be missing a whole part of the world where people can pick up couple of screws, put them into a wall and use the back of the power strip cut outs for mounting it.

NOT one screw I have ever seen fits into these cut outs. Either the head is too tall or too wide or the head is cone shaped and doesn’t fit.

is there a particular screw or nail one is supposed to know to use with these?

It makes me angry they don’t supply couple of screws when you buy these.

Usually I just jam something in there and hope for the best.

Anyone know better way?