3 plastic terrariums / vivariums for insects, spiders, small reptiles, etc. 
The largest is 40cm x 23cm and 29cm high
Another is 29x19x17
And the smallest 18x11x11
Each has a mesh lid with a clear panel in the middle.
The medium and small have a clip-on lid with a handle on top, the large has a push-fit lid and no handle.
They had been used for stick insects, the smallest for very young ones, but have many other uses.