A couple of years ago, I (nervously) replaced the battery of my old 4th generation iPod. 

Sadly, while the transplant was a success, the hard drive failed a few months later. Bashing the iPod (advice from the internet) brought the device back to life, but only for a little while. After which the iPod was consigned to the drawer of cables. 

Of late, I’ve been considering a new one. But I read a useful instructable  a few days ago. Which then led to the discovery that modifying old iPods is becoming popular. 

I have now purchased some bits and pieces. Naturally, should the project fail, I may not mention my old iPod again.