Here’s a photo story on making a wooden stockade from bamboo skewers.
Modeling
Making Camouflage Netting In 15mm
The Empire of Ghosts blog has a tutorial on making 15mm camouflage netting.
Making A Stone Wall And Metal Fence Terrain Piece
Here’s a how-to for making a nice stone wall and metal fence terrain piece.
Making 28mm Corn Plants
Here is a terrific tutorial on making corn (maize) plants for your 28mm wargames. These are by far the best I’ve seen.
Making Rocky Hills
Maiwand Day blog has another tutorial on making a rocky hill out of wood chips. It’s wonderfully effective.