All I do is lay down an old towel (important in case the food coloring stains) and grab an assortment of things I find in the kitchen. It varies every time and the possibilities are endless. This time we had a Pyrex pie plate, measuring cup and spoon, a straw, an old spice jar and a plastic squirty alligator from the latest trip to the zoo. Then I fill a couple of containers with colored water and let Jack have at it.
He has so much fun. Pouring, scooping and splashing. There is minimal clean up involved with the towel on hardwood floors (I would suggest not doing this on carpet. We've hung out in the kitchen several times) and it gives a Mama time to finish a couple of chores. That being said, I do love to find an activity for myself that allows me to sit near and observe if I can. Without direction the way he chooses to use these objects never ceases to fascinate me. So next time you're bored, grab some kitchen junk and some water and watch the magic happen.