The Funguy Concentrate Rig has a built-in mushroom perc and an adorable mushroom carb cap. You also receive a free terp pearl with purchase. A dab rig fit for a champignon. The Funguy Concentrate Rig has a built-in mushroom perc and an adorable mushroom carb cap. You also receive a free terp pearl with purchase. Now is the time to follow your morel compass and discover your new favourite rig!