Now Serving Ollie

Thanks to 3D, everything old is new again. Here's an [alternative](http://www.thingiverse.com/thing:328465) way for students to queue up for your help and attention. Just hand out a 3D printed name tag to every student in your class. When they have a question but you're busy helping somebody else then they can hand you their name tag, which you put on the back of a zip tie. They'll know that their place in the queue is secure, and you're better able to focus on each student in turn.

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