For Christmas this year I made a tepee for Oscar. It took me a few evenings to muddle out a plan and another week or so to sew it up during nap times. I wrote down a crude set of instructions on how to make one for a couple of friends, and thought I'd share here in case there's anyone following my exploits that wants to have a go. The instructions are rough, but hopefully are enough to give an understanding of the process.
Hexagonal Based Tepee (PDF)
The final product, as presented to the wee man on Christmas morning: