Do you always lose the lens covers for your drone cameras? I do! Now I can print this in bright colors and put a lanyard on it so I have a harder time losing it! This fits right over the lens and clips securely in place.

No supports needed. Just keep the speed low. I printed in TPU. 1 or 2 shells with a 0.4mm nozzle. It has a flat side for resting on the printbed and in that orientation the overhangs are manageable without supports. You might need a brim on your printer because the part is so small.