Display shelf for art shows

The sitting area in my studio

Dave made me a wonderful selection of display shelves in various sizes to display small unframed works for art shows.  He had made one before in a large size which i used in my porch studio gallery, but these are more suitable to small sized works. That's two of them resting on the blue loveseat in my studio.  

I painted them all white so they will fit nicely into the decor of the Gallery at the Porch Door when i do open it up in the spring. I'm looking forward to doing a couple of shows this year.  I found out that i've been accepted into Art Among the Ruins which is a lovely 1 day outdoor event not far from where I live. Of course the weather could be a factor. Anyone have a canopy for sale or rent?