Not just pen blanks Tony--add a 3/8" thick layer of a contrasting wood to each side, and cut bottle stoppers, i like "nutmeg" sandwiched between wormy maple. Nice alien look when turned. Someone on here puts sections at off angles in pepper mill blanks as well--extremely cool. In either case, it's best to build the blank so that the layers "warp" as part of the turn. I've got a few bottle stoppers left, but they are at the office so i can't post pics tonight.