Originally Posted by Ken Wind

There are some really good recommendations here. I always carry a spare tube, 15 mm wrench (for wheel removal), tire levers, pump (Topeak Road Morph), sunglasses, a hat, and a cell phone. If the weather is foul, I recommend fenders and a change of clothes. Powerful lights (Dinotte Dual 5W LED) are essential if I am out when it's dark.