I printed my sister a lens hood for her camera for her birthday, but there happens to be no hood for a 35-80mm lens on Thingiverse, and she doesn't have a lens filter yet so there was no way to attach any of the designs here. So I designed an adapter ring that clips into where the lens filter would screw in.
Her lens is a 35-80mm and fits 52mm filters. The hood I printed and designed this for is webboggles' Canon EF-S 17-85 lens hood (thing 73161). There is also a version that will fit bob345's Canon 18-55 stm lens hood (thing 893699), but I haven't tested the fit.
1.2mm support line distance, 0.4mm support roof thickness. Printed in PLA because I went through 4 iterations before settling on a design that worked how I wanted.