Need to take a microscope outside? We tried and liked this USB scope from Adafruit, but needed an inverted microscope for a portable project so we laser cut an acrylic table for it. Here are the plans in pdf format. The back and sides are 5 inches across, cut from 1/4 inch thick clear acrylic, the top is 1/16″ (thin so you can still focus 200x on your items) and the nuts and bolts are 6-32 nylon. We had some Mcmaster nylon parts already: 94812A113 (nuts) and 94609A153 (bolts, were a bit long but easy to cut to length)

Here’s a picture of a sensor from the upside-down scope