A prickly plastic pad designed to keep racoons away from... whatever you want to keep them away from.
This should be something the entrepreneur can manage if it really costs $8.99 per unit to manufacture and he realizes the full margin on a sale of $27.99. If he's only getting a wholesale margin, then this could put a real crimp in his cashflow.
Remember, the downside of royalty deals is that they take money out of the company that could otherwise be re-invested.
This deal is being collated and will soon be posted. Check back shortly to see the details on this company and the pitch it made on Shark Tank.