I have a 10 month GSP, he will not retrieve anything. I am looking for tips or ideas to get him to retrieve a ball, dummy or anything. Please help!!!

I would ask what you intend to use your GSP for - Hunting?

I had a similar problem this last hunting season (Sadie's first).  She was just over a year old when she got out to the field, and would not retrieve anything (although she did retrieve balls prior).  After weighing options, and what I wanted from her (we were hunting pretty heavy cover so a reliable retrieve was NOT an option in my mind), I decided to do a trained retrieve.  As Pixie Bee says, get a good resource on it.  I used Dobbs, but I would recommend Evan Graham SmartFetch (a little more detailed resource).  It takes time (avoid anyone who will grab your dog and start pinching its ear doesn't get it...).  It took Sadie a full 3-months to walk all the way through it, but her manners are fantastic now, and her last hunt she retrieved all birds to my hand - it was worth it.

Of course, if it is just a game that you want your dog to play with you - keep playing.  They all understand eventually.

If you do decide to do a trained-retrieve, post regularly on your progress on this website (or others, if you are more comfortable with that).  There are a lot of people here that can help through any issues, as well as people that have the same difficulties that could benefit from some testimonials.  I personally found posting on this website extremely helpful.  If you post pictures, we all get to share in your successes as well . 

COOL!  I did not use paint rollers, but I can understand the value - easier to see "Chomping" and other bad mouth habits, and nip them ni the bud before they are problematic.  I also agree with Pixie Bee on the 3" rubber, or plastic dummies.  Sadie ripped into 3 dummies before I started training to retrieve, and I believe it took an extra month to eliminate some of the bad habits - luckily the bad mouth habits didn't translate to the field on live birds.  Using 3" plastic dummies, I was able to weight them with water, which pretty much eliminated any shaking she wanted to do with it.  The plastic was also a little more durable than the canvas to start with.  Now, after training, we have had the same 3 canvas dummies, which are none the worse for wear (her mouth habits have greatly improved).  One did get chewed-up pretty good by our little dog (she aparently wanted to be trained to retrieve them...).

I also used a home-made force-break buck.  It was just a 1 foot length of 1/2" exterior conduit pipe, with 2 "T's" on the ends.  I wrapped it with twine in the middle (to encourage holding in the center of the object).  This was just to give something else with a little different feel during "Hold" training.