A brainstorm without a decision at the end is a nice afternoon.
Give it a real question, a time limit, and a decision at the end. Most brainstorms skip the last part.
What question should a brainstorm start with?
A specific one. "How do we grow?" gets nothing. "How could we get ten more customers like our best one by spring?" gets ideas you can try.
Who should be in the room?
The people closest to the customer: whoever answers the phone, sells, delivers, and fixes complaints. Add one outsider who will ask the obvious question. Keep it under ten.
How do I get past the first obvious ideas?
Ask for a lot of ideas fast, including bad ones. The first ten are the ones everyone already had. The useful ones show up after people stop trying to look smart.
How do I pick the idea?
Narrow in two passes. First, everyone marks the ideas that would matter most to the customer. Then, of those, pick the one you could test cheapest next month. Name an owner before anyone leaves.
What happens after?
Build the smallest test of the idea within a few weeks, while people still care. See testing an idea before you spend money on it.
Answered by Jared Lukes, Minneapolis. Twenty-five years in brand, UX, and technology, currently holding fractional AI and technology seats at three companies. About Jared.