With respect to graphene, it's possible to make reasonable quantities fairly cheaply using several different methods. See here for a recent rundown (yeah, I k

With respect to graphene, it's possible to make reasonable quantities fairly cheaply using several different methods. See here for a recent rundown (yeah, I know, youtube, but it's worth it in this case if you actually care about the subject.) https://www.youtube.com/watch?v=7q4UQL5k4wI https://www.youtube.com/watch?v=7q4UQL5k4wI Graphene will be commercially cheap fairly soon, I suspect. Meantime, it isn't that difficult or expensive to experiment with for yourself.