**Adding This: get him a Journal. A blank pages book. Barnes and Noble has MANY for any gender or age. Journals are ALWAYS good things, for kid or adult... they can write their thoughts and imaginations and hope and dreams and invention ideas! It is a real productive thing and fun and creative. He can use it for jotting down anything.
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Skateboard?
Cards?
The brand "ThinkFun" makes great games, for all ages, for 1 to more players. Barnes and Noble, or Amazon has it.
Woodworking things?
Crafts?
Things that uses his imagination...
Science kits?
Gardening kits?
Cooking sets? Lots of boys are good cooks! And many good Chefs are men!
A Tree Hammock????
Per Legos, some States have Lego Clubs... which are for kids 10 years old and older, even adults. My State has one. Also, "Lego Robotics" is really hot, schools even compete in it etc. Google Search "Lego Robotics Kits." It takes creativity and intelligence and problem solving skills to a whole other level. It even can involve learning computer programming. It is not "kiddie" type activities. Our local Middle School even has a Lego Robotics team and club. For example.
When your son says he is bored... and if my kids tell me that, I tell them to think of something on their own. And they do. My kids are 6 and 10. They always find something to do.