What would you invent with a grant of $325,000?

If I were the sole winner of the Super Lotto and had more money than Bubba Gump Shrimp and I said, I would grant you $325,000 to create an invention. The criterion for the invention is it has to:
• Solve an existing problem or need.
• It has to vastly improve how an existing process is done; a better washing machine, or lawn mower or better, etc.
• It has to be able to built under the 300k or be 95% market ready for that amount.

What would you come up with, a robotic dog walker maybe? An outer exoskeleton that will allow paralyzed people to slip into it and walk about like the rest of us? Perhaps a mechanical rescue device so incidents like that in Alameda, Ca will not happen again.

Luck might hit me and I will win the lotto some day and I might remember the better ideals…..so…… :-P