I need to know what glue to use

I paint on old ceiling fan blades, recycle repurpose, inexpensive when you do or don’t have money, my situation is don’t. I am gluing picture hooks on the back but sometimes the hooks do not stay. Any suggestions on glue or another way to hang them? I am currently using E6000.
a couple I have done. Most of them have WELCOME on them.
Lighting on this one was not very good.
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