I love how these plant cells look like a Lego wall!

And what a difference lighting makes! This is the same sample viewed under different light conditions. The light box gives a solid white background making the cell walls look like they were drawn with pencil. While, the Foldscope LED light module produced an image with shimmering colors!

Longitudinal section of plant stem viewed under a Foldscope
 2.0 at 140X magnification (the close up images were viewed with 140X magnification plus 5X zoom on my phone)