Pre-mortem
"It's a year from now and this plan failed. What killed it?" People find it easier to be critical this way, and the plan gets stronger for it.
Write first
Everyone writes their ideas silently before anyone speaks, so the most senior voice doesn't set the frame.
1-2-4-All
Think alone, then in pairs, then fours, then the whole room. Every voice is in within minutes.
Stop-doing
Design the perfect way to miss your targets, then spot what you already do that looks like it.
Confidence vote
Everyone shows one to five fingers on each decision. A room of threes isn't agreement, so we ask the twos what would move them.
Plus the games from our sessions, which make more sense on a call: Unicorns love Rainbows, Becoming a Time Lord, Strategy Bingo, and It's a deal, it's a steal.