An auxetic fidget thing (https://en.wikipedia.org/wiki/Auxetics)
I made another toy you might like if you like pointless stuff: https://makerworld.com/en/models/247922 ;)
Make sure you have a clean build plate before attempting the print, it can have issue with sticking
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.