@couch83 I make papercrete (shredded paper + Portland cement + Perlite) pots, fairy houses, and accessories like patios, walls, etc. I use discarded containers as molds to form the papercrete or just hand form them.
If you want to duplicate something like a troll doll, an ornate button, or tree bark, go to YouTube and search for making silicone molds. You can use 100% clear silicone caulk and soapy water (some add cornstarch too) to create wonderful molds. It's the least expensive material I've found yet.
Good luck and post pics of what you make!
