Technically not a mini, but here's some uses I found for my "micro's" that arrived from Lee Valley:
Storing my sanded "dry fit" dominos.
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Note that if you're not overstuffed, you can store them inside the dominos systainer
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My "lifetime supply" (because as an amateur I'll NEVER build that many cabinet doors) of SpaceBalls (tm):
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and lastly, the replacement leads and erasers for my "Fatboy" from Fastcap:
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