One participant planted a very large pepper plant in her plot. She had been coddling it for quite some time in order to get a decent harvest in our short summer. One day, it was gone without a trace, roots and all. I suppose someone decided that they needed a large pepper plant in their garden, and didn't want to start one from seed or buy one from the store. I hope the thief feels guilty every time they eat a delicious, stolen pepper.
I planted a pepper plant as well, but it was much smaller. A couple days later, it was reduced to a single leaf. I'm pretty sure that the villain in my case had four legs and a fluffy tail. Some of my peas have been nibbled as well, but the rabbits seem to be leaving the garlic and tomatoes alone.