Contemporary self-tracking devices take forms that reflect particular cultures of self-tracking that emphasize clinical perspectives and numerical precision. In this pictorial, we explore alternative forms to speculate on other possible self-tracking cultures. We present how we involved experts on the relationship between the gut and the brain to inspire a design brief for an alternative gut tracking device. This led to the design of Loupe and Lightbox, which together operate to externalize gut biota for closer examination, aesthetic appreciation, and reflection on the self. The device represents an example of self-tracking as cultivation—building a longer-term relationship with the self as something to be nurtured, tended to, and cared about.