As much as I like the 3d printed clamps I have actually found an alternative made by Bosch and it's a clam shell type so perfect for those quick release.
These where £5 and are available in 31.8 which fits 35mm bars as the have rubber inserts which can be easily removed for 35mm bars..
These are a quality parts and quality plastic.
Hopefully Available in the US if not plenty available in the UK and should be available to ship US..