You can use a pair of shoes that you no longer like or a pair from a thrift store. I bought these high heels for $15 a few months ago with the intention of customizing them. These are vinyl shoes, so these instructions apply to vinyl, not leather or canvas. Avoid shoes with overlay, heavy stitching, buckles, bows, etc. Very plain shoes are easier to customize.
I'm using Safety Red and Gloss Black. I tried the Rustoleum Plastic Primer on another pair of shoes, and it didn't work as well as the Krylon Fusion which is why I'm mentioning this brand in particular. It also comes in many colors and is easy to use.
This one is acrylic, but I have a feeling you could use a wax finish.
You will need 8 packs for a pair of women's shoes and 2 for men's.
I'm using 1".
I found mine at an auto parts store, but call around and be specific with what you need to do with it. Many stores claimed to have it when they didn't.
For wiping away mistakes and cleaning tools.
Or any appropriately sized funnel-shaped, hollow object.
I'm using 60, 120, and 320 cut into 1"x2" squares.
Fine, not coarse.
This is a piece of board from an old picture frame that I wrapped in a couple sheets of wax paper and taped down. This will help for molding the Sugru and protect your flat surfaces.