I used to make weed tea all the time, but haven't done it for a while. Here's my recipe for a one person serving...
1 cup water
same amount of weed you'd roll in a joint
1/2 cup milk
boil the water with the weed for 10 minutes. add milk and boil another 10 mins. strain, drink, enjoy. it can take up to an hour to take effect, and depending on how much weed you use, it can last up to 6 or 8 hours.
It's also really good if you throw some hot chocolate mix in there while it's boiling, kinda like earthqueen's cocoa idea.