How about one of these made up of your favourite track? ;D
https://linearedge.com/
8)
They look good. To add realism should there be some dotted lines at the corners? ;D
Oohhh, I'll get Colin some of these to go on it ;D
(http://ecx.images-amazon.com/images/I/31o%2ByAQ2BmL.jpg) (http://www.amazon.co.uk/Scale-Model-76th-Traffic-cones/dp/B003APB38K/ref=sr_1_6?ie=UTF8&qid=1404946880&sr=8-6&keywords=model+traffic+cones)
I might not damage much if I hit them. Thanks for thinking of me Paul. ::) :P