My least favorite gadgets are ones that I have received from Pampered Chef. I attended a party that my best friend was throwing to help her earn a set of knives (she was successful!) and I bought a few things that looked good like a pastry cutter with a long handle, it looks kind of like a potato masher. The metal is too weak to handle cold fat to cut into flour, it just spreads. I bought a rotary cheese shredder and it broke in a month. I didn't bother to return either one, too much bother.
I do still use the goofy looking egg separator when I don't feel like doing it the old fashioned way, there are no edges that can puncture the yolk, it looks like a spiral basket on a handle.
My mom buys me some pampered chef gadget every christmas because a friend sells it, and I appreciate the thought and I use the stuff, but always think that for the price, you could get better stuff in Target.