[QUESTION] I was pulling out my strings from my newly bought second hand guitar and something fell out?!

I just bought an electric guitar from a second hand store and I was removing the strings because it was strung to be left handed. These fell out:

https://imgur.com/a/0WeRcyX

And the back of the guitar has another silver thing poking through

https://imgur.com/a/vCDheMZ

What do I do?! This was a birthday gift – is this hard to fix? I was planning on taking it to a music store tomorrow to get it restrung, will this be expensive to fix?

submitted by /u/Concerned-Fern
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