The Unicorn Mini's compact size and affordability make it one of the best electric dab rigs for under $100.This mini e-rig has a compact design and sits comfortably in your hand., The bubbler sits over the heat element, so there is no need for carb caps. With the built-in heat source, the Unicorn Mini is easy to use. You won't need a butane torch like with traditional dab rigs and quartz bangers.