You can grow tobacco too... but not a lot of people go through the trouble when it's so easy to purchase it legally. Ditto with beer. Sure, you can skirt the taxes issue by brewing it yourself, but most people are perfectly content to give a couple bucks to the gubmint to get their fix. Same thing would happen with marijuana.
Anyway, not to be a buzzkill, but there was a case awhile back where the court decided that for the purpose of determining the weight of a controlled substance in the possession of an offender, it was correct and proper to include the carrying device. For example, in the case I am thinking of, they added the weight of the paper to the LSD in determining how much the defendant had for purposes of sentencing. In other words, you put the whole thing on a scale, not just the controlled substance itself.
It would not surprise me one bit to see this extended to homebrew with such ingredients. Hop a bomber of beer with an ounce of pot and you now have 22 ounces of controlled substance.
Go ahead and be creative, but be careful too.