Odd things you eventually figure out...

[tctrek]

I've been searching for at least two months for a reasonably inexpensive source of flat sheets of 5-6 mm neoprene to cut into pads for under my big toe joints in my running (and other) shoes, for my Morton's foot.

This morning I realized I have probably eight or nine flat sheets of 5-6 mm neoprene laying around the house in storage boxes, shoved in the backs of drawers, etc.

And so do you. Think about it....
in the 20th century we used to call them "mouse pads."

I'm a dunce... I didn't see that you had put in a bunch of blank lines and then gave us the answer. I've been sitting here wracking my pea brain trying to figure out what I had laying around that is neoprene!