At my old yard, which was also a RS, feed got stolen a lot. My mare had to have a lot of supplements and they would reguarly go missing.
She was a very highly strung arab and didn't like strangers, and I know it wasn't the fault of the kids as most of them didn't know any better, but they'd run around about her when she was tied up and fuss her because she was 'so pretty'. Surprised no one ever got kicked! No one ever rode her without my permission, they were all too scared