To help with your weightloss, what would it be? I would invent a device that you can just stab your food and it will read the nutritional info for that food, even for that serving size. That way you wouldn't have to save wrappers or worry about entering info incorrectly when your food doesn't exactly match or have info posted.
Oooh, and even better, once you get the info from your food, one touch of a button could send the info right to your MFP food diary. I really wish this existed, lol.
So what would you invent?