I’ve used the trick many times from a little tape on the end of a pen to retrieve a nut that got stuck in between two panels, to a 10ft poll to retrieve my mobile phone that I dropped down a service ditch at work. Please add a comment if you have found this useful. And let me know what and how you retrieved your items.
Mechanical grip good for small items but will have difficulty with larger items.
Magnetic retriever only works on ferrous metals