The Slime Studio has opened its doors in Holt's Feathers Yard, offering a hands-on experience where visitors can design and make their own personalised slime from start to finish. Lara Doughty is the founder of the new Slime Studio in Holt (Image: The Slime Studio)"Seeing children and adults become completely absorbed in making something with their own hands and watching families laugh and create together has been incredibly rewarding. Children making their own slime at the new studio in Holt. You can make your own slime in the Slime Studio in Holt. The Slime Studio is open Monday to Saturday from 10am to 4pm throughout August and other school holidays.