Livin' in the Fridge

This is a good idea:

Timestrips smart labels have been talked about for some time and are just about to reach a refrigerator near you. Called “intelligent Post-it Notes” by their manufacturer, they are basically clocks, using capillary action to automatically monitor elapsed time, from under one day to six months.

Activate a Timestrip after you open a perishable food container, and a tinted liquid-filled indicator slowly begins moving across a range of time that shows you how long a product has been sitting in your refrigerator. The big news here is that Nestlé is going to soon begin using the smart labels on its packaging for a line of ready-to-use sauces.

Oh, wait: only as long as six months? I'm not sure that would help. There are things in my refrigerator that have been there so long they're evolving. I really do need to clean out the fridge before something in there develops language skills....