Vermicast, or worm castings, is amazing to perk up houseplants and plant under your garden plants. You can make a tea from this as well to feed young seedlings (when they have their 1st set of true leaves) and really get your moneys worth! 
As available choose from:
Made on Venezia Farms, Brimfield Ma or
Made on Petrie Family Farm, Brimfield Ma.