Made a quick finger clip for the MAX30100 sensor and wanted to share it with you.

As shown in the photos, there is a 1.95mm radius rod that connects between the two parts. Feel free to customize the radius of the hole!

I used a steel spring to squish the finger. However, rubber bands totally works fine.

There is an opening for a regular USB cable at the bottom part (If you need only 4 pins out of the sensor, I highly recommend using a USB cable).

For printing, I used Ender 3 v2 with Tree supports to avoid any irregulate printing process.