bins and computers
Big and little bear have different jobs around the house. Big bear takes out the bins from the house and does the ironing of the shirts.
The little bear takes care of the electricity and the computers and things like that
Big bear could never cope without the little bear to fix his electronics. Without little bear he would have a pile of expensive black boxes that he wouldn't be able to do anything with in his house.
If big was not there to take out the bins and iron the shirts things would get rather messy and smelly and crumpled pretty quicky in little bears house.
Big bear gets a bit frustrated when little dosen't take out the bins. And when big can't work his technology little gets a bit frustrated too.
It dosen't matter how long the bears are together, they still do things quite differently, and maybe even see the world in a different way. Isn't it funny how two differing things like that can get along and love each other so much.