Logitech Wireless Solar Keyboard K750: At last a wireless keyboard without the hassle of changing batteries. Logitech has engineered a flat — just one-third of an inch thick — keyboard that draws ambient light for its power. An included power app provides a lux meter to ensure you have sufficient light. Once charged, the keyboard can reportedly run for up to three months without additional charging. An integrated power indicator on the top of the keyboard lets you know its current power level. No more batteries — unheard of for any wireless gizmo! (www.logitech.com, $80)