I have wood panels for my ac vents that have little stick on things, but they arent sticky, how do I get them to attach to the car?

You can go several ways. Gorilla Glue will give you the best stick, but it dries puffy and may come out the sides. I used it for an old Lexus I got and I had to go back and chip it off the edges with a razor. You could use superglue gel which will hold well but tends to slide so you have to hold it in place for a bit. Or you could use some spray adhesive usually sold at auto parts store. The spray will work but you have to careful about getting it on the wooded sides. Your best bet is to hire a professional (upholstery shop) to do the job. If they mess up then you at least have some kind of recourse. If you go it alone and mess up then you are just the guy with the crazy looking woodpanels in his TL.

you can buy the 3m strips they work real well