This video has advice on turning a cheap Chinese static grass mat into a usable gaming table mat.
Modeling
Fight Artillery Duels With Working Cannons
From the December 1932 issue of Modern Mechanix is an article on building a war game which involves shooting toy cannons at enemy targets. Instructions for building the mortars are included.
Hat Tip Martyn
Making Molds From Sheet Foam
Here’s a clever method for making false building fronts using molds created from craft store sheet foam.
Making An Acrylic Caulking Battle Mat
Here’s a good video with instructions for making a battlemat with acrylic caulking.
Solidscape 3D Heroscape Map Viewer
Solidscape is a bit of software that converts Heroscape maps created with Landscape into fabulous looking 3 dimensional view.