Trick #1: You can use the TF2 Paint tool to make objects without physics (Effects) To be solid. Most of the time, it wont paint the object, unless it's a paintable Cosmetic.
BUT BEWARE: Do not try to use Prop Resizer or No Collide World on the object, it causes major lua coding errors in Gmod. Just, just dont do it.

Trick #2 You can use the Color Tool (Normal Tool) to color TF2 Weapons and Cosmetics, and then a custom color crit effect for a ghostly appearance, a demonic or angelic effect!
Examples:
Demonic: Color: Solid Dark Grey; World Glow - Crit Effect: Crimson Glow (Orange-Redish)
Angelic: Color: White; Glow - Crit Effect: Light Blue Electricity
Ghostly: Color: White, Gray, Black; Hologram Crit Effect: White, Gray, Black

Thanks for the tips. Appreciated! :)

Tips greatly Appreciated

i only use this to crit glow my painis
























































so it looks more painful