If you're saying "How old are you now?" to half-used baby-food jars more often than to your actual baby, you need these digital timers, which come with handy, stretchable bands. Snuggle them around any food container to track the time elapsed since it was first opened, and spare yourself the dreaded sniff test.
Price: $10 for two timers with three- and six-inch bands
Manufacturer: Double u Products, Inc.
Available at: howmanydaysago.com