It's Not Just Standing Up: Patterns for Daily Standup Meetings
"It is too easy to confuse effort with work. The stand-up should encourage a focus on moving work through the system in order to achieve our objectives, not encourage pointless activity.
Post raised obstacles to an Improvement Board. This is a publicly visible whiteboard or chart that identifies raised obstacles and tracks the progress of their resolution. An Improvement Board can be updated outside of stand-ups and serves as a more immediate and perhaps less confronting way to initially raise obstacles."