Here’s a tutorial on making trees from scouring pads.. They’re very nice looking, and it looks like a fun project, but frankly you can get nice pre-made trees from a variety of sources. Still, they’re bound to be a lot cheaper, and if you’re a do-it-yourselfer ….
Dagorlad has a great article on the architecture of Gondor, along with instructions for building models for your Games Workshop Lord of the Rings battlegames. It’s simply amazing how he breaks down still photos from teh movies and then translates them into miniature.
Robet Spears has some instructions on builidng a burial mound in 25mm / 28mm scale. It’s the perfect thing for a horror game.
I’ve always wanted to do a Romans in Britain scenario. In recent months, I’ve been picking up Romans on Ebay as I’ve found them, and soon will begin looking for Celts and Gauls.
This paper model of a section of Hadrian’s Wall might come in handy. In the scale it’s in, you’d need 79 for a Roman Mile. The model is in black and white, but a little work with watercolor and a fat brush would quickly solve that