This is a bobble-head chicken toy.  It uses a 3D printed spring and 10mm google eyes fit into it.  The base is large and can hold a 10mm magnet (glue may be needed) .  Prints easily with no supports and minimal infill.  Looks best if you change colors when printing. 

The spring mechanism is based on the excellent bobble head collection designed by 3d-printy https://www.printables.com/model/224836-emoji-printer-bobbleheads.  Be sure to see their extensive collection of bobble-heads and other items.

Enjoy