low profile modular formicarium units

These were inspired by the many modular ant farm designs available on here. I liked the low profile formicarium design by caswal. These should work well with any of the designs that use the same interlock connectors. Mine have 8mm holes rather than the rectangular holes Caswal has. The units with a cotton ball reservoir should have a hole drilled in the acrylic window over the reservoir to allow filling with a syringe or pipette.