my son is hyperactive ,I want to use his energy in some better way.....

My eldest son also used to take toys to pieces too, one thing I did was to buy him lego, this occupied his mind quite a lot in that he would sit for hours building things and you can buy lego sets for different ages so that the pieces are not too small. Also if he likes to take things to pieces to see how it works then consider buying science sets that are made for inquisitive minds. Sometimes kids need more activities than just sitting and playing with toys, if my son was left to his own devices for too long he would be in everything, destroying whatever he could, so I used to take him out and play football or garden games and also we used to do a lot of baking and making things, we would play with plastecine, and we would make playdough out of flour and water. I had to keep him occupied all day long he was a very tiring child and you often class them as being naughty, when in fact they are not they just need more things to do.

There are children who do that. But if he is very hyperactive I think he has to be observed. I agree that you give him lego to play. Perhaps he will be interested with those. Or you have to explain to him to keep his toys intact. Choose a toy that will keep him busy. Those type that he cannot disassemble.

I have no idea how to help you. If you want him to get some energy out of him then make him run around the block a few times or run the dog every day . All children might be small but PACKED with more energy then an elephant almost. Good luck!