5. Two Part Resin compatible with your RTV
Alumilite's 'starter' resin (fast cure ~7min pot life). A copy of Tony's PKF (Paino Key Finger) from his Death Star Tiles (1of4 per PKF Tile). Smooth-ons starter size pack, this is their #326 resin.
Tony's Gribbly mold with a bit of his alumilte resin curing. Two light fixture gribblies cast in Smooth-ons Crystal Clear resin.