For those looking for a clear enclosure for a Zooz Zen 16 or 17 multirelay, the Sterlite Pencil Cases work well, as they are
- Clear so you can see through
- Have hinged and latched "top" which in my use becomes the front
- Are a great size - not too small, but not overly large.
- Are more affordable than "project boxes" sold on Amazon (although admittedly probably not as robust). They are usually $0.99 at Target, but are now on sale. I just paid $0.49.
Hope this helps someone.