Good Morning! I can't answer your question about the spray basting because I don't use it. However, you are looking for the Clover Binder Clips. You can get them on Amazon, Nations Notions, Keepsake Quilting, Quilters warehouse, etc.
https://www.google.com/search?source...llllll0&aqi=s1
It looks like Amazon has them for the best price right now.