In the book The Ultimate Accidental Housewife: Your Guide to a Clean Enough House, author Julie Edelman offers these, and other cool cleaning tips:

1. To prevent a stickly film from forming on cheese graters, apply a thin layer of cooking spray
2. Pick up shards of glass with a slice of bread
3. Vinegar disinfects almost any surface, and it is green to boot. 
4. To clean the inside of a microwave, zap a bowl of water and lemon juice for five minutes.  Let it cool before opening the door and wiping down the walls.
5. A toilet will shine if you drop two Alka-Seltzer tablets into the bowl.  No scrubbing required. 

I'm always looking for insightful tips.  Hope one or more of these is a find for you too.