Hands for barrel Popup
The original Trash Can Trauma has pneumatics for the extra hand motion. Timing and extra cost for the pneumatics sometimes makes it difficult to implement

The simplies is to have the hand (a glove with expanding foam in it) hang from the lid with fishing line. I coated the gloves with glow in the dark paint and put a compact flourescent blacklight in the barrel.

Support for adding drawer slider

18 inch drawer slider has L bracket on the end

A pulley is attached to feed the string from the base of the head to the bottom of the drawer slider

Make sure the string does not abrade rubbing on surfaces.

Two hands that popup with the head