Chris Notap was able to pull a tiny splinter from his hand by attaching a small lens attachment he made for his phone, and looking at his phone's display to guide him in the surgery.
Here's a video on how to make the lens attachment (basically, buy a film camera for a couple of bucks at a thrift store, take it apart to retrieve the lens, and hot glue it to a popsicle stick): https://youtu.be/tPzPHXwlXSs
