Ice is a fun, inexpensive, and fascinating material to explore in your sensory table! I like to add color to the water before filling my ice molds, to add interest, and so that the colors begin to mix as the ice melts. Then I fill a variety of containers – ice-cube trays, of course, but also empty plastic food containers (Cool Whip, sour cream, yogurt, etc.), plastic cups, popsicle molds, muffin tins – anything to create an interesting shape. You can place these in your freezer, if you have the room, or if you’re lucky enough to have absolutely frigid temperatures as we did here, just place them outside overnight.