When coming up with ideas for the smenms project the team used methods somewhat like this. We had specific constraints in the project which we either defined or were defined for us. Within these constraints we set-out to come up with as many concepts as possible – I think our goal was 100 in an hour. It was exhilarating, fun, and quite fruitful.

It’s been said that art, creativity, and innovation are about the recognition and mastery of constraints.
“Man built most nobly when limitations were at their greatest.” — Frank Lloyd Wright
One of the best ways to be truly creative–breakthrough creative–is to be forced to go fast. Really, really, really fast. From the brain’s perspective, it makes sense that extreme speed can unlock creativity. When forced to come up with something under extreme time constraints, we’re forced to rely on the more intuitive, subconscious parts of our brain. The time pressure can help suppress the logical/rational/critical parts of your brain. It helps you EQ up subconscious creativity (so-called “right brain”) and EQ down conscious thought (“left brain”).”

Embrace your constraints and use them to your advantage.
Read:Creativity on speed