This is a super fast tour of about 10% of the printed accessories we have in the shop / office. I would crash the internet if I showed you everything.
Regarding biodegradability, I'm no expert and I haven't done any research, but my gut says that if the prints aren't exposed to the elements, what is going to start the degradation process? Also, even if it was an issue, just print another bracket every 15 years.
I use PETG for nearly everything, plus we have a product that is printed in PETG. The product has been outside in our parking lot for 2+ years in the sun / rain / snow and has shown zero effects. It doesn't even get soft on 100º days sitting on asphalt.
Machine number, coolant filter pressure gauges, washdown hose hanger:
Custom part storage for transport to / from plating, and delivery to customer, angled base for indicator, holster for custom gage pin:
Pallet numbers, magnetic nameplate to tell operator which blank goes in that pallet:
Hose routing:
Did you say collet organization?:
Misc brackets:
Custom metrology. This one is permanent, but could be used for development as well.
Nearly everything needed for setup / running of a job in one place, and a wrench station with switches in it that alarms the machine out if one of the wrenches is absent: