Insoles as habitats Kit
This kit will allow you to create an habitat within your shoes. The idea is to take advantage of the almost non existent space within shoes to grow an organism not very popular in architecture: Black Mold, also known as Stachybotrys Chartarum (atra).
Here are the materials: Funnel (optional), soil, silicone, utility knife, plastic bag (any kind).
Step 1: Cut
1 - Cut the plastic bag with the utility knife using as a template one of your shoes.