As funny as this seems - and how many folks will avoid it - there are so many tests that can be run on feces/urine to monitor health, and catch things when your body is acting poorly and health conditions change, I actually bet these will become mainstream someday (for home use).
People already monitor heart rate, exercise and in some cases BP from home, that having a daily/weekly chart of all the things these additional tests could provide would probably be a net-benefit for many people if they can adequately address the obvious privacy concerns.
Most do not understand that testing testing testing leads to interventions that you did not need and those interventions do more damage than good.
The obvious gift for an anal hypochondriac who likes to be in the vanguard.