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Kids demo's: Ideas for quick printed memento?

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A couple times a month I coach kids in programming, mainly during these so called CoderDojo's.

I often get asked to bring the 3D printer for a demo and when I go to dojo's where I haven't been before I usually try to print something little in advance for all the kids.

This usually ends up being the UM robot for smaller dojo's, but a lot of them are now around 50 kids and I sometimes don't have enough free printing time to print that many in a decent quality.

So I'm basically asking you guys for ideas. Something that can be printed in not too much time and that the kids would like as a memento.


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I usually print a bunch if these, and put them on pipe stem cleaners for the stem.


There are some medium trumpet flowers that print 4 at a time gcode files that I use. They are easy to take off the build platform I just keep running those jobs. the trumpet flowers are also tall enought that you could do some custom gcode to have the print head kick them off the bed and print more. So you can let the machine run with a bucket on one side to catch the flowers as they literally fly off the machine.

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