I was lucky enough that my mom saved all my old Legos. I raided them recenty and found plenty of barrels, treasure chests, trees, and more. They are little bit larger than D&D mini scale, but close enough for me.
Great ideas folks!! I have a model train shop near me that I'll try later today. The links also look promising, and I'll pursue many if the train place doens't have what I'm looking for.
