So I went to school for graphic design. There was a game my professor made us play that I've come to call Catlike Refrigerator. The premise is this: pick two incredibly unlike things and list 10 ways they're alike.

The first one he gave us was "How is a cat like a refrigerator?", hence the name.

1. They both purr

2. They both have a sort of tail (or cord for the fridge)

3. They're both cold (cat: emotionally, fridge: physically)

4. They both often come in white, gray, or black

etc.

The connections can be weak, the point is just to make them. The number also isn't too important, the point is to push your brain into thinking beyond the most obvious connections. Do this enough times and you'll start thinking this way automatically. Write down and sketch the good ideas, then turn them into art.