Watching Eyes

A little Halloween decoration I made for my yard/garden - eyes designed to follow the viewer as they look at them, based on the good old “concave eye” illusion. Best printed with the eye part in a fluorescing/glow-in-the-dark filament, and a UV floodlight aimed at them to make them really stand out. Make sure the stand is in a non-visible filament (black, or just non-fluorescing white) so it's not visible at night. I'd love it if the flow in the dark filaments actually glowed in the dark without UV on them, but in my testing it lasts all of ten minutes so you need something else. The illusion improves the more even the lighting is and the less shadowing you have, so if there's multiple lights, even better! Do tilt the eyes slightly upwards so that they're angled towards the viewer's head when they're looking at them, as well. I used Bambu PLA Glow for the eye part, and Bambu PLA Matt White/Grey for the stand, as it was what I had on hand. I tried PETG for the st