Supermarket own brand cheapest shampoo makes a perfect Play Slime! Less than 50p for a big bottle and no preparation time needed. It smells great and pearlescent ones are super for mark making.
We added sparkles, scoops, beakers with holes in and a cheap helter skelter toy (marble runs also work very well).
Creative messy play toddler classes for babies, toddlers and preschoolers in Cheltenham.