Hi. My name is Roy and I’m head of CAD in team 4590 from Israel. We got qualified to Houston a week ago and we ran into some issues shipping our equipment to the champs.
At the moment we really need a gazebo for our pit… so if any local teams happen to have an extra one please message me 
You do not want anything covering your pit, it should be open so you can see your robot when working on it.
There is no requirement that you have a structure set up in your pit either.
Although there’s no requirement we prefer to have our pit closed :\ we fill the gaps with large printed “walls” with some nice stuff, and we hang on the gazebo some posters.
This is a niche play, so I’m going to present the alternative idea: buy a canopy (there are Walmarts everywhere in the States, so you should be able to pick one up in-store), use it while you’re in Houston, and then sell/trade/donate it afterward.
At under $50 (minus anything you can get for it after you’re done), it’s not too bad a hit considering the price of everything else for a robotics team going halfway around the world.