Here is a fast, cheap and easy way to make decent tank traps for any modern wargaming table with step-by-step instructions and pictures to guide you. These are a great addition to any wargaming table to add some small details.
This tutorial on how to make miniature trees is cheap and easy. I use twist ties as the core of the trees and then add details for a nice finishing touch. This is a great and cheap way to get some nice trees on your wargaming table.
Here is my DIY barbed wire tutorial for wargamers. It's simple, inexpensive and very convincing. You only need a few items to create barbed wire. This is a nice way of adding some small terrain details to any wargaming table.