Doll Dexcom Sensor

My 7 year old niece has Type I diabetes. She currently uses a Dexcom sensor to monitor her sugars. My sister saw a picture of a doll-sized sensor someone had made and asked if I could design something for my niece. I was happy to oblige.

This is a two-part print. The base is a button that can be sewn onto the arm of a doll (e.g., American Girl, Elf on the Shelf, etc). The top is the "battery." I added magnets and printed the tops in different colors so she can change them out.

Magnets:
Th