I facilitated the Casual Constraints Contest during 2 events. I would really recommend this technique because of the big play-factor in it! The participants are challenged to come up with as many ideas as possible, give to some constraints. Because of the competitive aspect in this techique, I discovered that competitiveness plays a large role for many participants. In both sessions, we came up with a lot of creative, unusual and executable ideas! Use this technique when you have to overcome constraints or when you just like the more play-wise way of facilitating but still want a usable and serious outcome.
I used this technique during a creative workshop for a large company. It was very useful and it helped my participants a lot to look at incremental steps for a new concept. Everyone was very enthusiastic and came up with +- 5 ideas per category. In the end we created with the 5 best ideas a new concept. The advantage of this technique is that it really guides you towards the (re)creation of a product and/or service. This means that you start with a good guideline that tells you how to think about innovating products and services, so that you can't get lost in the ideation process. In the end you have a very sustainable concept that does not require radical changes in the company.
I used this technique with my team (5 persons) to come up with ideas on how to improve one of our products. It worked amazingly well. Foremost, it was an eye opener that the ideas who were - at first sight- quite crazy, resulted in the best concepts. Thanks so much!