Simple assortment box with small pegs/holes to allow them to be easily stacked ontop of each other. Rigdes in the bottom makes the structure very rigid. 100x150mm.

Now in two versions, with either six or four compartments

Note: You may wan't to use https://www.printables.com/model/710404-stackable-assortment-box-mark-iii instead, it is better designed and have more interior options