Periscope

This was inspired by https://www.thingiverse.com/thing:1027744
This is designed for the mirror shown in the photo and available here:
https://www.amazon.com/gp/product/B000RZQI68/
If you don't use this mirror, you may have to use a different approach to attach the mirrors other than the clips used in this design.
The end pieces are a tight fit for 2" PVC pipe, so some sanding may be necessary.

UPDATE 6/29/18: I designed a different, more secure clip for the mirror. See the photo. This will only work with the acrylic mirror specified.