Sandman with Follower

Although you really cannot tell from the pic, the LED in the follower is actually a tri-color (blue/green/red.) When the LED is on, you can still make out the circuits on the surface and it looks like the contours of the real thing. Here's a link:

www.yourprops.com/norm-45726ce9e6586-Logan's+Run+(1976).jpeg

Done