Some of my materials came from other projects, or from items that were no longer of use.
$7 to $10 - Scrap Leather 10 oz. (The leather I used was very thick and stiff. I bought it at Hobby Lobby in a scrap pack)
$1 - Brass Brads Salvage - Elastic Salvage - Battery Pack Salvage - Led Salvage - Fiber Optics Salvage - Batteries
$1.00 - Hot Glue
$1.00 - Shrink Tubing
$1.00 - Zip Ties Salvage - Old Cotton Glove