Can't wait for MDMA made from plastic lol.
Vanillin which is the main ingredient in vanilla can also be used as starting point for the MDMA synthesis. Well the Vanillin needs to be turned into Piperonal first although currently this approach is impractical since vanilla is too expensive. A better methode is to make it from black pepper which is less expensive.
Note that I do not condone any kind of drug making and I'm pretty much a noob to chemistry. Don't attempt to do something you have no idea of.