This is a simple dog poop bag holder designed in Fusion 360. It is inspired by a poop bag holder from Nattfodd with a sturdier connection point for a lanyard and with a wall thickness that prevents my dog from breaking it if she gets a chance to chew it. I have printed it in PLA and PETG and both work fine. The lid should be printed with the screw threads pointed up. No supports are required and some tolerance is included to ensure threads don't bind. It is designed for Earth Rated bags, but I think they are a standard size.