Sleds

round saucer sleds make great shield core

brands

• pelican - good, lightweight, sturdy
• riva sports, space saucer, snowsled - good, heavy duty

some online examples

• http://outdoor-recreation.aubuchonhardware.com/games/snow_sleds/flying_saucer_disc-821128.asp
• (under "flying saucer 3 pack") http://www.sledwarehouse.com/plasticsleds.htm
• http://www.acehardware.com/product/index.jsp?productId=1287257&cp=&keywords=saucer&searchId=5354892081&parentPage=search

Check out the Amtgard Resources page for more information.