Tea

I think builder's tea could make a good construction timer reduction item. To make this possible, tea and sugar cane could be added to farming, and a cooking action could convert sugar cane into sugar. The fermentor could be used to make black tea out of the raw tea leaves. Crafting could make teabags, or just make it loose-leaf.

Other teas and tea-type drinks could be added. A sage tisane could be used as an aura buff (perhaps extend spell duration or strength for the next N casts without stacking, or to increase the XP from gong banging). Coffee could be used as a speed timer reduction. Green tea could increase fishing success because it's refreshingly warm, and you've been freezing your bottom off waiting for the darned things to bite.