My team uses Lego to track work done and what we're spending our time on.
This was our last iteration (two weeks):
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The section at the front shows task completion. White bricks are added when a task is developer done and committed, orange bricks are added when they're QA complete.
The section at the back shows what people spent their time on by day. We have:
* Green: time working on tasks for the team and project specific meetings (estimation, planning, etc.).
* Red: time spent fixing flaky tests, broken builds, etc.
* Blue: meetings external to the team (developer communities of practice, etc.)
* Black: misc interruptions.
This is how the same iteration looked when laid out flat:
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(We had some issues with our continuous integration (CI) in that iteration!)
It works quite well, and people are more inclined to play with Lego than they are filling in information on a tracking tool!