Here's a neat little kitchen tip: tired of smelly kitchen sponge (but don't want to buy a brand new one)? Wikimommy has the solution: Microwave it!
First, rinse the sponge and squeeze it as dry as you can, repeat this process twice. Then you put the squeeze-dried sponge (which is still a bit moist) in the microwave, put it on high for about 5-10 seconds maximum. Take the sponge out with care unless you want to end up with a sponge-print on your hands. Run it through some cold water and oh the sweet smell of clean sponge!