I found the 10-speed chainring on Ebay years ago. I liked it, so bought it, but never had a use for it. So for years I've wanted to build a bike around it. ConTENtious is it. Some of the features are a custom twin stick console shifter, 26" rat-trap, drum brake, suspended sissy, and dual rear brake calipers.
You can see how it came together here: https://ratrodbikes.com/threads/contentious.118942/