My special object

Lost 12 times,
Found 12 times
A tower of blocks,
All movable in different ways,
Colourful like holding a rainbow,
If a rainbow was heavy,
He is the opposite
Like a superstar,
That everyone wants to be with,
I’m sure if he had a mind
He would want to be left alone,
Whenever I see him,
It’s like he smiles at me.
When he’s at home,
He likes to stay in a confined space,
If he had a mind,
He’d call it home