Here’s a good video tutorial on making the sort of terraced wargames hills which are not particularly realistic, but which are eminently practical from a gaming perspective.
Chevauchee 100 Years War Rules
Chevauchee is a set of free wargames rules for man-to-man combat during the 100 Years War.
Making The Ultimate DBA Ruler
Here’s one man’s attempt at making the “ultimate DBA ruler.”
Working With Mantic’s 20th Century Red Brick Terrain
For their Mars Attacks game, Mantic released sets of 20th century style brick ruins. They’re good looking, but with a little work can be even better.