Foam Rocks/Boulders, Boulders look just like real granite - without the weight!, Hand-crafted of light - weight foam!, Tosss this one around!
Foam Rocks Pebble (Approximately 2 by 2 by 2 Inches)
Carving Foam Rocks on the Thunder Mesa Mining Co Part 1
How to Carve and Paint Miniature Rocks From Styrofoam
Making Foam Cones & Domes (Hot Knife DIY Projects)
Faux cave and rock with realistic stalactites - Learn how to make!
Carving foam rocks 2 – Artofit
Foam Carving
DIY 3D Styrofoam Aquarium Background with DIY Roots - US Native
How to Make Rock Formation from Urethane Foam
Epic Terrain. Warhammer terrain, Wargaming terrain, Miniature wargaming