These are 2 glass lamp shades from a pole lamp that bit the dust. They have a round opening in the bottom that slipped over the light bulb. I would like to turn them into birdbaths but I don't know what to do about the hole. I thought about glueing a Cool Whip lid on the bottom and just setting them in the flowerbeds but I am afraid any kind of glue would just melt in our 100 degree weather. Any ideas? If not birdbaths amongst my flowers then what else could I do with them? Can't bear to just throw them out.