Katherine Aull was our runner-up for the biobricks lifeform. She explained her entry like this:

This paper describes a novel counter design, based on a bit overflow detector to signal “carry” events, and a bidirectional toggle switch to update and maintain the count. It also describes work towards a prototype, ongoing in the author’s home laboratory.

All our judges were extremely impressed with Aull's home laboratory, which is located in her closet. When she's not inventing lifeforms in her closet, Aull is a research associate at a synthetic biology startup. She has a B.S. in biological engineering from MIT, and lives in Cambridge, Massachusetts. Here is her paper, featuring an excellent photo of her closet lab.