Yes, these can be purchased, but they are expensive for what they are and surely a better design is possible.
Prototyping and Inventing Problems

Create a sewable button cell battery holder!
Headphone management in the Lab
Can you figure out a way for us to store headphones close to the computers, but also out of the way? The solution could involve using the poles at center tables, but needs to be different for the computers along the walls.
Door Window Covers for Lab
We want people to see in, but we we don't want to be seen during a lock down. The solution should also somehow represent the work we do in the lab.
Create an Innovation Lab sign!
We need something that lights up, gets attention, shows what we do, etc.
Cell phone or list holder for a shopping cart.
Stop tables from moving
Even with the brakes on, they still move!