7 Year old boy gifts??

Julia

What would be a good gift for my 7 year old nephew? Something on the cheaper side of things! Something that he can perferably use with his two siblings (around the same age). Maybe so something that would help them tap into their creativity and imagination? Just some good old fashioned fun- no electronics. My brother lives in a different sstatewith his kids, and I'm not sure what my nephew is into.. Thank you for your suggestions in advance!