Our grandson is having his 7th birthday soon but we won't be able to visit on his day but we were able to visit this past week. I had made him an explosion box for his birthday and I wanted to see his reaction. I think he enjoyed finding his "treasure". He will have other gifts to open on his birthday. He is a sweetheart and so smart. He invents interesting creations out of ordinary objects. Maybe he will be an engineer when he grows up.