There's that beverage I enjoy so much, bottled green tea.
From the comments below, I see several people don't know this bottled tea. It's widely sold in Japan, at a modest price, in vending machines, convenience stores and super markets. There is also a roasted version that is darker but tasty, too. I have found both varieties in Asian markets here at home but, it's too expensive after being shipped across the Pacific.
As a note, there are some variations on the bottled tea that include rice or other grains. Avoid those as the added ingredients ruin the flavor.
I'll be busy the next few weeks. Commenting will be spotty at best.