Just another take on the huge number of extrusion indicators out there. I'm a big fan of Spaceship Earth and have always loved Epcot's icons.
Like most of the other ones out there, just superglue two 8mm magnets to the back and it pops right on. I printed this in Overture PETG with a color change/filament swap for the upper layers, but this is a simple print and could be printed in most any material you like.
(Note: I did not create the Spaceship Earth icon, only the 3d design here.)
The author marked this model as their own original creation.