My brother was like this.  But, he was also determined.  So, if he had something to do, even if it was hard, he'd keep doing it.  We had a full basement with a linoleum floor.   We had millions of hotwheels and miles of hotwheel track.  We both spent an hour or so putting all the track together.  But, it had to go down the stairs, and turn at the bottom, because simply setting it up on a flat floor was lame.  So, he would engineer the track to turn at the bottom without any of the cars flying off the track.  I'd get tired and give up, but he'd keep working on it until late into the night.  It kept his mind and body busy.
Â
He also had a mini bike when he was about eight or nine. Â He took it apart all winter long and put it back together until spring when he could ride it. Â (we lived in Downtown St Louis, so I have no idea what my mom was thinking sending him out there on a mini bike)
Â
Our basement was probably the only thing that kept my mom sane. Â We spent most of our time down there riding skateboards, playing ball, and doing other long term projects. Â My brother needed something huge to put together all the time. Â I was more quiet and preferred to organize pennies and marbles, and small animals. Â
Â
In the winter he was sent out to shovel snow. Â He could do whatever he wanted to with the snow, as long as he got it off the driveway...so, then he'd build huge buildings and sculptures with the snow that he shoveled. Â (you'd have to watch him from the door to make sure he wasn't hurting himself, or wandering off)
Â
Â