HAND

The garbage can is as our mind with all the confusion and chaos it possesses. Our minds accumulate mostly useless and junky things. 

The ball, this perfect shape, is our mind's aim, the ultimate and ideal model we want to create. The hand symbolises everybody's way; everybody's tool to create things. Our tools are not perfect, just like the hand I made. Everyone stumbles then goes ahead sometimes with mistakes, sometimes in search of new ways to express himself or herself.