How about a four cornered screw head, Mark?
I once worked for someone that was a member of the 3M company. She and her husband had divorced and at the ages 15 and 17 she reinherited her children a boy and a girl, both spoiled.
The older one, the boy, was given a Honda 250R three wheeler by his mom. At that time, those were the hot ticket. Those were the good machines that everybody wanted so they can show off.
As I was installing carpet he came in and asked if he could borrow a screwdriver. I asked, what kind?
He replied, the one that looks kind of like an X. I handed him my Philips screwdriver and he was quite content.