Marble Runs make a fantastic gift idea for 4 year old's. Kids will enjoy the challenge of building the marble runs and then watching the balls traverse their way through! They are a great activity to do together with a parent, sibling or friend. And are a great alternative to screens. Marble runs expland creativity, develop spatial awareness, are a STEM activity (one that includes Science, Technology, Engineering and Maths), improve hand eye coordination, and they also encourage the development of problem solving abilities! We hope you enjoy browsing our marble runs for kids aged 4!