While using my PiFinder in my front yard I found the camera would occasionally get swamped with light from a street light.  I created this shroud to combat this issue. It is designed to be easy to pop on and off by using glued in magnets.  I have black steel bolts on my camera holder.  The shroud feels like it should hold nicely.  Printed in black for obvious reasons. It definitely helped with the plate solves.