Recently? A cordless stick vacuum. My wife has wanted one because ours was too heavy and she figured she would vacuum more often if she had a lighter one. Of course that turned out to not be the case and I am still doing the vacuuming but it is a heck of a lot easier to maneuver around and bring it to other areas of the house.
Previously? Wireless ear buds. Loved those. Unfortunately my dog ate my first pair and I left the second pair on a plane. My next pair will be cheap ones.