Cor-ten steel is probably extremely expensive but it would be easy to install and virtually indestructible. Could we find scraps of it somewhere?
Red’s True Barbecue Ιn Τhe Ηeart Οf Manchester’s Albert Square | Yatzer
Google Image Result for http://www.modernfurniturestores.co.uk/wp-content/uploads/2012/03/Wrought-Iron-Furniture.jpg
bicycle wheel gate upcycle (think I would spray it matt black)
Casa Almare by Elías Rizo Arquitecto located in Vallarta, Jalisco, Mexico.--- gate to property?
Rebar Railing Design, Pictures, Remodel, Decor and Ideas
Add Some Galvanized Metal! | Twist My Armoire
wine bottles were threaded onto pieces of rebar, making a unique and whimsical privacy screen.
leaf gate - iron work
Make low gates in similar style to these (similar to gabion) to put between corner of house and hedge