I'm taking a vacation soon and I'll have someone taking care of my fish tanks, cat and dogs while I'm away.
This is my first time trusting this person so a hidden camera to keep an eye on my stuff (specially my fish tanks) is a great idea. In my case, I'll just use a tablet as if it was left behind in my desk so, this is even better than an actual security camera.
Of course I trust this person won't steal anything (valuable at least), but who doesn't want to have an eye at home, right? Specially when you have fish tanks and a curious cat.
Check it out: