As a reminder to my family I created this 6 inch sign which I printed on a dual extrusion printer - one body is black and the rest are in orange.

It can easily be scaled on your slicer to print in larger or smaller diameters.

When you download the .stl it will print as 1 body, you need to 'separate the connected surfaces' in your slicer (I use Simplify3D) to create the print with a dual extrusion printer.

A small piece of double sided tape will mount it in a very conspicuous spot in your home or workplace.