I liked James' Multi-Use Case design, so I adapted it to organize my seed collection. It fits most of the paper bags that seeds come in. It was designed to (very loosely) fit into a SkyFlakes crackers box, because that's what I had lying around.

Inner dimensions: 92.7 mm (length) x 27.6 mm (width) x 123.6 mm (height)

Outer dimensions: 16.3 mm (length) x 34.0 mm (width) x 126.0 mm (height)

OnShape document available here.