The New Hummingbird Sign
This is for the front gate, front door, next to the front door or attached to a screen door. But can be put wherever you would like it to be.
Available on 5"x7" & 9"x12" aluminum. The 9"x12" has holes on each side. The 5"x7" includes double-sided tape. They are good in all weather. I'm also going to Laquer them for added protection.
Mounting I think would be best would be double-sided tape, velcro or 3M release tabs you can also use 2 screws or wire it to a chain link.