What to do with old Series 3??

I now have two Premier units with Stream and no longer need my old Series 3.
So what should I do with the old box?

1. Can I harvest the hard drive to expand one of my Premiers?

2. Smash it with a bat like in Office Space?

3. Open it up and reverse engineer it?

4. Give it away?

5. Put into a crate and store at the Area 54 warehouse?

6. Sell it? How much?

7. Other?