Overview: An encore pitch from last season's epic inventor, a chilly invention turns up the heat, and an eco-invention melts The Dragons' frosty exterior. Plus, yummy mummys, macaroons and marijuana. Pitches Include: Collella Dad, EcoTraction, K-Trak, Pacifier Puppies, Puckmasters, Sleep A Roo, Tranquility Wellness, Vangook Vs. Paintwell.