Here’s a nice project that uses plywood disks from Jo Ann’s to make command stands for Black Powder.
modeling
Making Islands In 30 Minutes
The Man Cave has a photo tutorial on making islands for your naval wargames in thirty minutes. They look pretty good.
Making A Dragon’s Horde
Terragenesis has a photo tutorial on making a model of a Dragon’s Horde.
Scratchbuilding A Pirate Cutter
Paul’s Bods blog has a short series of photo illustrations on how he built a wonderful Pirate Cutter.
Making A Middle Eastern Style Monument Tower
Here’s a tutorial for making a tower/obelisk such as those you might find in ancient middle eastern towns.