For this BB I decided to grow quinoa sprouts and lentil shoots, because it is what I had on hand, and my trays are the drainage trays I used from old plastic planters I've had for at least two years. The medium is reused soil that I sanitized in my crock pot at the beginning of the year, effectively neutralizing any nasties that could have grown in them from last year's outdoor growing project (which ended horribly in a fungus gnat extravaganza, but you gotta take your lessens standing up, eh?) So far, the sterilization has proven effective.
After completing this I decided to use some other drainage trays to sprout chia, arugula, peas, spinach, and even bunching onion. All from existing seeds and materials that I had in my apartment. Fresh nutritious sprouts at basically no cost to me or my little family! Those are not pictured here, but I am too excited not to share the news. The concept of possibly doubling the nutrient content of some of these seeds just by sprouting them and making them more bioavailable is... well, it's the bees knees to me.