The pressure cooker.
When innovating, pressure is a good premise.
As unique individuals, we are coping with pressure every day. Sometimes even extreme pressure. It's sort of how our mind works best, which is why we have to nurse it according to that premise to develop it.
When innovating, pressure also tends to be a good premise, although if there is too much pressure, we are at risk of panicking and thinking like we always do — meaning little or no innovation takes place.
Instead, a nice, solid limitation that caters to our innovative talent and needs is often a good starting point.