With getting my Ender 3 a short while back, I'm now happily immersed in 3D printing.
My search on thingiverse for "Colecovision" didn't really net me much.
What I would love to print would be a better replacement joystick for a stock controller. Not the whole unit, but just the joystick itself. Maybe something spherical & knobby.
Problem is, I gotta get off my duff & learn the CAD software to actually make this & print 'er out.