Sensory projects are great for kids of all ages. It's a place designed for squishing, sifting, sorting, digging, and pouring, where children can get messy, discover, and play freely. They can vary in styles from water, sand, beans, rice, shaving cream and many other things. For this one i just used lentils, a spoon and two cups. This kept H busy for at least 30 minutes pouring, scooping, and mixing the lentils.