Ryan Scow has an article on making balsa strips look like realistic timbers.
I’m currently painting some of Wargames Foundry’s Plains Indians for a 7th Cavalry game. I found this site, with descriptions of symbols that the Native American warriors painted on their horses.
The City of Solis website has some good looking, hand drawn banners that you can cut out and use with your Warhammer, Chronopia, or other fantasy armies.
Matt Fritz has some good instructions for drawing your own paper soldiers. This would be a good way to try out a new period!
From a wargamer’s perspective, what’s not to like about the world’s greatest conqueror? Here’s a website on Genghis Khan with some good background information, including maps, biographical basics, and a nice look at Mongolia today. This last would be good for some of you doing the “Back of Beyond” games.