Snap Together Containers

Snap together containers based on a 9-omino. The 9-omino, piece_9_26_p3.stl, from thing:3366887 can be assembled into hollow square columns that extend to infinity. Sections of this infinite column can be used to make containers. Four 9-ominos make a section - print 4 for the short container, 8 for the medium container, and 12 for the pencil holder. Top and bottom pieces complete the containers. OpenSCAD code is included.