Newegg offers the APC 3-Outlet 125VA Home Network UPS for $27. Coupon code " EMCXRJRJ2" cuts the price to $19.99 with free shipping. Features include up to three hours of backup power and purported fast recharge of its internal battery. Deal ends today.
Note that it’s currently on backorder for 2-3 days and will ship when it becomes available.