With a 3 year old and a a 14 month old in the house, it's the small discoveries that I tend to get the most excited about.
A lot of the food that I serve my girls for meal times first gets cut up into smaller pieces. Most often it's to make bite-sized pieces for my youngest, but sometimes it's simply for the unpredictable whim of a three year old. I used to use all kinds of methods - tearing it up, using a case knife or whatever I had handy. Then the other day while I was cutting up a piece of cheese pizza I had a moment of clarity. I can use the pizza cutter to cut up anything.
Grilled cheese? No problem. Don't want that crust on the sandwich? No problem. Cut the chicken nuggets in half so they'll cool quicker? It takes two swipes. And I'm betting you already have one sitting in your drawer somewhere. I know it's not going to change the world or anything, but like I said, it's the small discoveries that can make your day.
And if you don't have one (or can't find yours) you can get the one I have (pictured) here from Amazon.com.