Amazon offers the Logitech K740 Illuminated USB Keyboard, model no. 920-000914, for $49.99 with free shipping. (Staples has it for the same.) That's the lowest total price we could find by $13, although we saw it for $2 less last August. Features include laser-etched backlit keys, a soft-touch palm rest, and adjustable-tilt legs.

Amazon also offers its Prime members the Logitech M570 Wireless Trackball, model no. 910-001799, for $27.49 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, it costs an extra $8.58. Walmart also has it for the same via in-store pickup.) That's the best price we could find by a buck, although we saw it for $7 less in December. Features include programmable buttons, 2.4GHz wireless, and up to 18 months of battery life.