Investigation

Here are some examples of ball sorters we found on the web:

I like this design because it's not too complicated and  looks accurate. 

Now the design of this one looks nice. Small but what I like about it is that it's  neat and looks like it does its main purpose very well

This one's not actually a ball sorter, it is a paper sorter. But this design helped us to think of ours. It looks clean as well as simple.

Source: Google Images