Get him one of these and paint it silver
My 4 year old Laison James is so actively smart and always yearning for more learning resources!. He picks up on things so quickly! We are working on doing a little homeschooling as prep for getting him ready for the upcoming school year. And i really think these wpuld make a significant difference. The magnets for a science experiment. What sticks and what doesnt. Friction. Negative and positive energy. www.amazon.com/Learning-Resources-STEM-Explorers-Magnet/dp/B07MJCW4H7/ref=sr_1_27?crid=163SXV8WS15KS&keywords=learning+resources&qid=1637311800&s=toys-and-games&sprefix=Learning%2Ctoys-and-games%2C209&sr=1-27
The robotic hand for mechanics and science technology.. building and engineering. https://www.amazon.com/4M-3774-Robotic-Hand-Kit/dp/B005MK0OPO/ref=sr_1_16?keywords=Learning+things+under%2415&qid=1637312529&s=toys-and-games&sr=1-16
And of course the binoculars because every time were out on a walk or at the park he sees the birds flying in the sky.. or squirrel's climbing up the tree! Hebwoukd finally be able to see them and watch them without scaring them like he does sometimes without realizing it! Lol https://www.amazon.com/Binoculars-Telescope-Watching-Birthday-Presents/dp/B094PPC8KP/ref=sr_1_415?crid=1K1JOLND0BRA0&keywords=learning+toys+for+5+year+olds&qid=1637311365&s=toys-and-games&sprefix=Learning+toys%2Ctoys-and-games%2C309&sr=1-415 binoculars