Designed in tinkercad, this is a simple handheld fidget clicker with a spinning wheel. You will need a spare mechanical keyboard key switch for the button. 

When printing, to keep the print from fusing the spinning wheel, minimize the "slice gap closing radius" value to close to zero. It may stick at first but you should be able to pry it loose. It's my first "print in place" movable part so any advice on improvements are welcome.