Some of the products at the links below seem a bit pricey, but it will give you an idea of what some manufacturers have available, may even trigger an idea to fabricate something on your own.

Uncle Dave's setup looks pretty good. Its compact and can be moved around easy enough to adapt to any size setup area. If your concerned about stability, extra weight could probably be added to the base.

But, for what its worth, here's a few links.

Ed


Nice variety of products on display here: http://www.kellyindustries.com/manufacturers/quik_lok.html
http://www.quiklok.com/
http://www.themusicpeople.co.uk/acatalog/copy_of_copy_of_Stands.html

Ultimate Half Tier Support Bar for Thinkertoys Stands: http://www.sweetwater.com/store/detail/HT15B/

Ultimate Support HS26BP: http://www.sweetwater.com/store/detail/HS26BP/

Small Utility Monitor Shelf: http://www.fullcompass.com/Products/pages/SKU--8024/index.html