Most baby powders are cornstarch, not talc, these years. Check the label. I was surprised. You can still find talc powder if you search a little.
The stuff is good for wok cooking as a coating instead of flour. Much crispier.
Cornstarch is also a great substitute for products like Carpet Fresh. Just sprinkle cornstarch on the carpet as you would any powdered carpet deodorizer and vacuum it up. Your rugs will smell clean and fresh.
Also great as a "dry bath" for your dog, if they don't like normal baths. Sprinkle into the hair and then brush it out.