I spotted this canopy at a tire shop the other day I went to have a nail removed from my car's tire. It looks exactly like the ones that are use in our local parks, except that those have some sort of nylon tarp to provide the shade.
Here the proprietor of the tire shop has used pieces of aluminum siding to act as the cover. Each sheet is cut to some specification and tied into place with metal wiring. It might be unsightly but it might prove to be durable.
This canopy proves that not everything should be thrown away. Stuff can be recycled.
The City of Laredo Parks Dept. should start thinking along these lines to combat the rampant vandalism taking places in the city. If things continue to be destroyed, then they shouldn't be replaced.