Connectable hex pen holders

Need a pencil holder, or just a storage solution that comes in different sizes that can be connected together with simple clips?

The whole collection comes in different heights that will all mesh together.

100mm, 75mm, 50mm and 25mm parts comes as single units that can be clipped together. There is also a 20mm container that can hold small bits like paperclips.

The connection system to link the hexes together will change to make it easier to clip each unit together that can then be easily removable than glued on place

**Update** - Now with a redesigned connection system that shouldn't need glue to hold parts together