Go to a park and have a treasure hunt. Leaves, sticks, rocks, they love finding things at that age. I babysat for a lady with toddlers and they LOVED baby einsten. It may just be a coincidence, but they where really smart. For a bit of messy fun, get a plastic tablecloth, make some edible playdough and let them have at it with kitchen utensils. (Not dangerous or sharp ones.) Potato mashers, cookie cutters,rolling pins, and spoons all work well. Have them "help" you cook, or do laundry. Make a tent with a blanket and chairs and play hide and seek. Let them dress up in big people clothes. Dancing. (IE crank the music and go crazy for a few minutes.) Sidewalk chalk is fun. You can pm me, I babysat for years before having my own. I have more ideas, but I have no idea if this is helping!
at 3:57 PM on Jul. 6, 2008