Calamus is nice. Makes a good addition to spiced coffee. I grow A.gramineus in my garden. Very robust and low maintenance (in my temperate maritime part of the world). It's a useful addition to a reed bed system.

Also, I've chewed sweet flag root and cacao nibs as a helpful adjunct to hard physical work.

The bit about asarone I think is only a small part of the story, the "TMA-2 precursor" spiel being especially misleading as there is no evidence whatsoever of the endogenous production of TMA-2 from asarone. There's more to it than the essential oils. What, exactly - I can't say.