My friend gave me shit because I bought a peanut butter mixer. He said Alton Brown would be disappointed. It was made for one thing, but it does it fucking well. No mess, and it basically cleans itself. It mixes natural PB so well, there is no need to refrigerate it, so it stays super spreadable.
I don't think it counts as a unitasker, though because it fits on wide mouth mason jars. I could mix salad dressing if I were so inclined, but fuck that. It's my PB mixer.