Here’s a little work in progress that I’m tooling about with.. the tube will end up drying to a clear red resin, with two LED lights inside.. The circuit is mostly for looks- just pretty shinies! But, that center chip contains about 35 lines of C++ to control the lights in the test tube.. What’s growing in there? 
Oh, and the tube will be suspended between the two branches with jute and some shiny wire. And whatever else I make up.
