I suppose that I might as well throw in my own bench shelf.

https://groups.io/g/oldtools/photo/267745/3295019

A big dovetailed box with a lid. I put heavy stuff that I'm not using in there,
forget all about it, pile a bunch of stuff on top until there's a thread about
bench shelves. Then I take everything off for a photo.

There are two battens glued along the outside top of the long edges that allow
it to hang between the stretchers.