What's a good glue to use to adhere a small mirror to a piece of wood (craft project)?

GORILLA GLUE

I would use silicon glue.

I think almost anything will work. Super glue or a hot glue gun come to mind.

I second Gorilla Glue. I’ve had good luck with it in the past.

Third Gorilla Glue.

i just want to make sure that whatever i use will not ruin the silver on the back that makes the mirror a mirror.

It depends…How is the mirror going to be displayed? Like, is it going to be hanging on the wall, or sitting on a desk or dresser? If it’s hanging, I think I would use Gorilla Glue. If it’s hanging, you probably don’t want any globs of glue that a hot glue gun would make. For that matter, you probably don’t want any of that at all. So I would say Gorilla Glue. It shouldn’t wreck the silver on the back of the mirror. Especially since most mirrors have some paper on the back.

Most mirrors have some paper on the back?
Gorilla Glue: fourth it.

As just about everyone has already said – Gorilla Glue works great, for this type of project. If you’re worried about it ruining the back, just use it around the edges. It won’t be quite as strong of a hold, but it will still work well enough.

Hot glue and krazy glue

Gorilla Glue will glue your mother to your father. its that good.

@john65pennington LOL. You’re absolutely right. If all the votes for Gorilla Glue and your endorsement doesn’t convince @jca that Gorilla Glue is the answer, nothing will.