Like paper airplanes?  Check-out this excellent collection of paper airplanes with easy to follow folding instructions:

https://www.foldnfly.com/#/1-1-1-1-1-1-1-1-2

This Awesome Looking 3D Printed RC Plane Is Full Of Design Considerations
https://hackaday.com/2018/09/11/awesome-looking-3d-printed-rc-plane-is-full-of-design-considerations

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