Uh, this one's for the ladies, I presume? Squishy mushrooms for smashing and stretching and gouging and batting against the wall. Combat stress by inflicting pain upon the Enokis. By making the Shitake feel as Shitake as you do. And, oh hey, by complete coincidence, all the mushroom species chosen for this anger management solution are phallic-shaped and being hand modeled by women with pink fingernails. Excuse me while I go puke up the beef kebabs I ate for lunch and put on cup on.
Only the Japanese would equate foamy fungi to the pursuit of relaxation. Ease your rage or funnel your sadness into one of 4 'shrooms o' tranquility, including a King Trumpet Mushroom, Matsutake Mushroom, Fly Agaric, and bunch of Enokis. Check out a video of them in action here.
Vendor Firebox notes, for better or worse, that Stress Mushrooms are non-hallucinogenic.