I've seen lots of questions about dent removal on here. I've been wanting to post what I use, so here you go:

Steamer

I'm sure you can find them cheaper, my wife bought a bunch years ago for $20 each.

They are fantastic and generate real steam in a few minutes and are great at removing dents.

In fact, just used it tonight to remove some vise dents from a mesquite stock. And I have to say that mesquite responds much better to steam than walnut. 100$ removal, including a compression crack that expanded back and closed up.