Add Beautiful Standing Grass to Your Layout or Diorama. The Grass Tech is a handheld, battery powered electrostatic tool that creates realistic standing grass scenery. How it works: Apply scenery cement (sold separately; see #85043 below), insert a pin/nail and attach clip, fill the shaker unit approximately 2/3 full with static grass, turn on the unit and wave it gently over the area. Polarized, statically-charged grass fibers land vertically on the glue. It’s that easy! Requires 2 D-cell batteries, not included.