Looks like one of those druggies used their bong and some fancy lights to create something that wil grow their crops more efficiently

For indoor plants, winter is a harsh time. Buying specialty grow lights can give your air-boosting indoor plants the right light and temperature, or you can build your own long-lasting, nifty-looking LED light spikes. Popular science details the parts and simple wiring steps needed to create the light spikes, which can be made from any clear container and hooked up and controlled as single units or chained into a system. No soldering or other intense electrical work appears to be needed, and with an LED controller, you’ll get a great deal more control over how long, how bright, and what times your plants are getting their fake sunlight. It’s a good idea to team up the LED lights with actual sunlight, using your spikes (or other light shapes) to cover the night hours.