My wife wanted a sieve to sift wheat. I figured that should be easy to find, I'd download one and print it for her. Turns out, even though there are plenty of sieves out there, none of them were what she wanted or they had issues with how well they worked for the size holes I was going for. One that I downloaded took over an hour and a half to slice. The one I created took less than two minutes to slice.

Since this really didn't seem like that hard of a problem, decided to just create my own. Here's my take on a sieve with as much configurability as I could think of adding in. You can have any size sieve with any size holes with the holes having the number of sides you want oriented the way you want spaced the way you want.

Multiple sieves can be nested for easy storage. If you want to use them stacked, you can print the separate stacker. Since the stacker itself is small, it should also be easy to store.