Stepping Stones Pre-School, Tring Parish Hall, Sutton Court, Tring. Friday afternoons. For children 0-5 years. 1 adult + 1 child £4, 1 adult + 2 children £5. A wide range of activities such as water, Angel Delight, painting, play dough, jelly, foam, pasta, lentils, slime, custard, bark, rice and gloop.