So a little story for this side quest: Our little 7lb pup got stung by a bee and had a severe reaction and stopped breathing. Luckily we got her to an emergency vet in time but it was incredibly close. We now carry small Epi syringes (pens are way too much for her) so I made a combination poop bag holder/epi holder that attaches directly to her leash. Needs some tweaks but came out amazing. Printing in resin - Tough 1500 V2 from Formlabs.
The cap on the poop bag side is a full annular joint, but I dont like the idea of the cap being separate from the design so I’ll be redesigning with a pinned hinge & latch


