Step 3: Do It Again!
Now that you've got one magnet, try for 20! I've been collecting for 2-3 years and I've got almost 40. My best one looks somthing like a a landmine, and weighs, oh, I don't know, 30, maybe 40 pounds.
What to do with all those magnets? Maybe you could sell them on Ebay, or start a speaker repair shop - it's up to you. Have fun with this.
Black Hole over and out