This is a cotton square (rectangle) holder for "Diane by Fromm, Cotton Squares"
These are an amazing value when buying on Amazon here: https://amzn.to/2t9V7d9
At time of uploading this thing you can get 160ct for only $3.00 as an add-on item.

I wanted something that looked nice sitting on top my enclosure and easy to grab the squares for isopropyl alcohol or acetone to clean the PEI coated bed.

You can likely fit other similar cotton squares in here, or cotton balls, etc.

Timelapse of build: https://youtu.be/QAPeyYmrO2Y

Prusa

No

0.15mm

Resolution and fill shouldn't matter much.

Feel free to reduce for faster print times.