Quartering - Identify boring stories (#64)
Categorize stories in 2 dimensions to identify boring ones
Draw a big square and divide it into 2 columns. Label them 'Interesting' and 'Dull'. Let the team write down everything they did last iteration on stickies and put it into the appropriate column. Have them add a rough estimate of how long it took on each of their own stickies.
Now add a horizontal line so that your square has 4 quadrants. Label the top row 'Short' (took hours) and the bottom row 'Long' (took days). Rearrange the stickies in each column.
The long and dull stories are now nicely grouped to 'attack' in subsequent phases.
(Splitting the assessment into several steps, improves focus. You can adapt Quartering for lots of other 2-dimensional categorizations.)