Poop Bag Shuttle

I hate poop bag holders that dangle madly off the leash, flailing about like tiny wrecking balls whenever your dog spots a squirrel.

This prints neatly without supports & hugs the leash like an overly affectionate python. Attach it with standard 4" zip ties: https://a.co/d/1LlrKm0

v2 - Total redesign because I hated the first one.

v3 - Total redesign because I hated the second one.

v4 - Incorporated bottom cap into shell, changed top to twist-lock.