There exist far simpler solutions. A stainless steel strip can be literally found on the street, and epoxied to the laptop case on one side and to a hard drive magnet on the other. Then any metal attached to the back of the phone - commonly sold for holding the phone in cars - can hold the phone to the magnet.

That’s a good point. Tho, community access is increasing faster than personal access, especially at schools!

However it is very easy to get something 3D printed and sent to you. Though perhaps less cost efficient.

Could be hacked together with some popsicle sticks and glue.