Black&Decker "Dust buster" battery-powered hand-held vacuum cleaner, can suck liquids as well.
Very little power. Battery is rechargeable, and recharging station is in the box.
More information at: https://www.blackanddecker.com/products/home-cleaning/vacuums/handheld-vacuums/dustbuster-hand-vacuum-wetdry-white-and-aqua/hnv215bw10

Price: 10$ or best offer; buyer picks up (Palo Alto area).