GrowThread

Cultivate Your Own Bioluminescent Costume Art

Grow your own bioluminescent, self-healing costume accessories from engineered mycelium and bacterial cellulose blends. Shape your accessory like a bonsai over 2-4 weeks - the result is a lightweight, semi-living prop that pulses with jellyfish-like bioluminescence when worn.

Start Your Cultivation

The Experience

A cosplayer slips on their custom-grown shoulder armor and it suddenly comes alive - soft wool-fiber tendrils gently grip their shoulders, and as they move through the dark convention hall, the piece pulses with ethereal blue-green light that ripples like a jellyfish, responding to their movement and body heat. Fellow attendees stop, mesmerized, asking 'WHERE did you get THAT?'

Starter Kit

$89
  • Basic mold design
  • Mycelium inoculum
  • Growth medium
  • Shaping tools
  • Online guide
Get Started

Artisan Kit

$149
  • Complex mold designs
  • Premium mycelium blend
  • Advanced growth medium
  • Professional tool set
  • Video tutorials
Get Started

Refill Pack

$29
  • Fresh inoculum
  • Growth medium refill
  • Support nutrients
  • Free shipping
Order Refill