Just had to show this-- caught my eye in one of the Christmas aisles at Michael's, "cork ribbon":
I thought "interesting floor material" :idea: and got a couple rolls to try. Upon closer inspection, it's mounted on a polyester, so wasn't too sure how well it would glue down.
It's actually quite thin and flexible, and seemed to glue down very nicely-- it's soft to the touch, with some "give" so that the edges can be pushed up against each other very effectively.
I like it! Glad I tried it.