Battery-operated mop
Yes, I was a little surprised/stunned to learn that my new mop requires 4 AA batteries. But the Swiffer Wet Jet is worth it. Accept no substitutes! (Particularly substitutes from Butler, which have plastic handles that crack irreparably in two after less than a year of use.) This thing sprays nicely and evenly in a fine mist, has velcro that won’t keep coming off, and has a scrubby pad on the side that’s especially useful in the kitchen. (You really don’t want to know what my kitchen looked like until 5 minutes ago. There’s a reason we don’t encourage people to “just drop by.”)