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I use one of these to catch spiders and certain other bugs like box elder beetles that plague my house and garage. I carefully place it over the bug and then slowly slip a piece of sturdy cardboard or thick paper underneath to trap the intruder and move it outdoors. It's probably a bit of high tech overkill to use a 3D printed part for this but it works. And the thing looks pretty cool sitting on your shelf as an objet d'art.
There might also be some other uses for this thing but those are for you to figure out. Any ideas?