https://thangs.com/designer/LeoB26 's honeycomb pen top is lovely, but it bugged me that my pencils rattled around in the Multibin. So I've duplicated the pattern and used it created an insert that fits inside a Multibin insert. Now when I put a pencil in, it has a divided base that stops them wandering to new angles... Chamfered to help wth near-misses. Snug fit, will probably need needle-nose pliers to extract it.

Can't add the top into "inspiration" as it's not remixable, so it's here - https://thangs.com/designer/LeoB26/3d-model/MultiBin%20Top%3A%204x1%20High-Density%20Honeycomb%20Pen%20Holder-1154185

Could conceivably be used to sort grains of rice too. No, I don't know why either.