A Murray Consulting Wanda.  The Wanda is an interaction device, similar to a 3D mouse, used in <a href="https://en.wikipedia.org/wiki/Cave_Automatic_Virtual_Environment" class="extiw" title="en:Cave Automatic Virtual Environment">CAVEs</a>, Immersadesks, and other virtual reality systems.  It has 3 buttons and a joystick, and contains a 6 degree-of-freedom electromagnetic tracker sensor (Ascension Flock of Birds or Spacepad).
<a href="//commons.wikimedia.org/wiki/User:Davepape" title="User:Davepape">Dave Pape</a>
<span class="int-own-work" lang="en">Own work</span>