#1-#2

1. Let the boss speak first

Nothing kills a brainstorming session like a dominating CEO or the brown-nosers who rush to agree with his every statement. Bosses should lock themselves out of idea-generation sessions altogether. Send him out for doughnuts, and you’ll get better results. 

2. Give everybody a turn

Don't go packing 16 people into a room for one particular meeting where each person has two minutes to speak. It may be democratic, but it's painful and it's pointless. It's a performance, not a brainstorm. In a real brainstorm, the focus should never be on just one person.