Here are a few pictures and some hints on making a bamboo tripod for use as a suspension / partial suspension frame.
This one was rigged for my birthday party in May, 2008.

(3) vertical poles
(3) horizontal floor bracing poles
(1) piece of line to lash the poles together
(3) pieces of leather thong for anti-slip stops on the verticals
(6) pieces of twine to hold the horizontal bracing poles
(1) Ring or carabiner
In Seattle we have a great resource for buying bamboo - Bamboo Hardwoods
Wrap a leather thong around the top of each vertical pole. Tie with a square knot - or use a Turk's head if you're feeling fancy. These pieces of leather keep the hemp tripod lashing from sliding down the pole.
Lash the three vertical poles together, using a tripod lashing. Refer to a knot or pioneering book or use Google to find instructions.
Stand the tripod up.
Lash a horizontal pole to two of the legs, using a square lashing. I used 4mm hemp in this picture.
Lash the other two horizontal poles to the legs, using square lashings.

Tie a ring or carabiner to the top of the pole. I used a 30 foot piece of 8mm hemp for the tripod lashing and had enough left over for the ring.

Test and enjoy!
Max is a Seattle-based bondage expert who teaches a variety of bondage workshops. He's been active in Seattle's BDSM community since 1992 and has been teaching workshops since 1999.
While he enjoys many different types of erotic bondage, his specialty is Japanese-inspired rope bondage.
You can read Max's complete bio and look a his past workshops and events here.