This carabiner (which as I was recently informed is also considered the "Jesus Fish") works. It can be scaled (almost) as much as you want up or down (don't go way too crazy), and the clip springs back as it does in a metal carabiner. It's a quick and simple print, and requires no supports or rafts.This one is easy! Have fun! Let me know how the prints go and any modifications or ideas you have for future versions. I have marked this thing as a work in progress since I plan to add other versions (size-wise) in the future