File:Cross section of the unopened fruiting body of the New Zealand basket fungus (Ileodictyon cibarium), next to a ballpoint pen..JPG - Wikimedia Commons
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Pilot Acroball Retractable Advanced Ink Ball Point Pens, Fine Point 0.7mm, Blue Ink, Rubber Grip, 5-Pack, Sticky Notes Value Set : Amazon.ca: Office Products
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Cross Classic Century Twist-Action Ballpoint Pen, Retractable, Medium 1 mm, Black Ink, Satin Chrome Barrel | OfficeSupply.com
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