There are three current problems with the Fidget Shoe, durability, noise, and price. The first issue is durability - not with the shoe itself, but with the fidget toys attached to it. Sooner or later, they might break. A solution I've come up with is this; make every fidget toy I can in the Fidget Shoe removable, so you can replace them and put new and different fidget toys in. That way, you can have a wide variety!
For noise, some fidget toys cause noise and matter no matter how small, every noise can feel loud when a teacher is talking. Because of this, I need to make sure the Fidget Shoe would be as silent as possible.
The final problem is price. A shoe costs a decent amount of money. A fidget toy is much cheaper, but either way, the prices are stacked together. In order to change this, I would need to use cheaper materials, but that would lessen it's lifespan. It's an endless loop