If I couldn't smoke weed I'd go for it's closest cousin, the common beer-hop, Humulus lupuplus, which is among the species sold as legal buds, I think under the name cannabacea. It is the active ingredient in several herbal anti-insomnia remedies and is a relaxing and pleasant sedative. Is it pot? No. Is it an effective legal high that will not give a positive on a drug test? Yup! (active ingredient= lupulin, not thc)
Beyond that, we really don't get into discussion of other pyschoactive compounds here so I'm going to let that bit that FBR posted explain all ya need to know, and close this thread. Sorry folks!