Ours isnt really cool but its easy to update each year if we ever need to add anything. We put magnetic surgical trays in our cart to make sure hardware doesn't get lost. There's a drawer for tools and space to keep spare batteries. The rails are adjustable for robot size.
and
http://hphotos-snc3.fbcdn.net/hs180...._6904068_n.jpg
Best thing to do is just make sure your cart is maneuverable and safe.