http://www.parktool.com/product/handlebar-holder-hbh-2
Park Handlebar Holder REI $19
http://forums.mtbr.com/tooltime/handlebar-holder-anyone-have-good-homemade-design-19783.html
Ultimate bar holder
http://www.tamiasoutside.com/2009/12/10/davis_hbh/
http://feedbacksports.com/shop/Flop-Stop-Handle-Bar-Holder-P9.aspx