Most but not all of these materials come from https://www.youtube.com/@BenCloward YT channel. Its interesting going over other peoples work, you often learn new ways to do the same thing.

Sparkling Snow
https://blueprintue.com/blueprint/5nscylxg/

Sparkle Texture - I have used this material for Stargate games in the past.
https://blueprintue.com/blueprint/nr7k5e6s/

Z Up Material - Top surface always has cover. Replace Colour with Texture if wanting to do something different. https://blueprintue.com/blueprint/axh9hf4_/

Moss Blended Material. https://blueprintue.com/blueprint/29f-si9u/

Portal Material https://blueprintue.com/blueprint/8f5ho40i/

Metal shader, any raw metal textures. https://blueprintue.com/blueprint/xbqgp0f7/

Brushed Metal Shader https://blueprintue.com/blueprint/whs4jd1z/

Continuous Tiling Shader https://blueprintue.com/blueprint/aet-xmof/

Filler material, fills in low areas before covering. Uses T_WaterN https://blueprintue.com/blueprint/3w3re0yf/

Glass Shader https://blueprintue.com/blueprint/r2khxc-p/

Ice Shader. Cracked Ice Texture & a Rock Texture https://blueprintue.com/blueprint/28z9cknk/

2 Tone Magic Orb - Smoke, Stars, Noise. https://blueprintue.com/blueprint/5ue0dkxa/

Magic Orb 2 (VFX) - Watern, Clouds1024 Clouds2_1024. https://blueprintue.com/blueprint/392k0j2j/

Iridescent Soap Bubble - https://blueprintue.com/blueprint/n4_i-oe3/

Iridescent Soap Bubble - Full coverage. https://blueprintue.com/blueprint/s5_8zqxz/

Simple Starfield Material https://blueprintue.com/blueprint/ne8cqnjx/

Fady Mohsen - https://www.artstation.com/artwork/VJ12PP Awesome idea, go & give him a like if you like his material!

PBR Master Material (Not Mine) https://blueprintue.com/blueprint/1cjpzmwu/

"Detail" Master Material https://blueprintue.com/blueprint/bxi4m-60/