These are
Rory's Story Cubes. They are very fun and you can play in different ways. Today was a snow day so out came the cubes.
The above roll instantly told a Sherlock story, which I pared down into a drabble.
Spoilers for s3. :)
The jet rocketed up; the world shrank away. The flight would take no more than three hours, so Sherlock closed his eyes, tried to stall his overwrought brain into resting, at least for a while.
His thoughts wouldn’t slow. He imagined John limping through London, no more midnight marathons. Would an ex-assassin wife, a child, be everything John needed?
Nothing outweighed John’s well-being -- his two years’ mantra, quartered. Six months was a bargain, but no guarantee of John smiling.
Not enough data. No way to ensure the positive outcome.
Jet engines roaring in his ears, Sherlock closed his eyes.