Most of my razors, being 5/8 will fit very well. I made the holes on top circular when they should be oval or otherwise oblong.

Simple piece of 1/2" oak plank and a dremel tool and spade bit with a little bit of chiseling to get things to fit. I sketched it out on paper
over Thanksgiving weekend and have tinkered with it for at least an hour or two since then. It's not quite finished. Needs a little more
work with some sandpaper, stain and seal, thinking about satin marine polyurethane thinned out some. I want it to still look like wood.

Thinking about doing this right in Ebony with my initials or name in ivory inlay. That's a little ambitious for my talents, I think.

Razors include ERN Craftsman, Dahlgren in Ebony, Friodur, Double Duck, among others I just tossed in there.