Here’s a short photo tutorial on modeling a teepee.
modeling
Texturing Gaming Board With Spackle
This video shows a nice technique for texturing game boards with filler (spackle).
Making Scale Model Rubble
Skankgame has a good article on making scale model rubble for your miniature wargames.
Building An Inexpensive Game Board
Here’s an instructional video on building an inexpensive game board.