Bailer - $12.
A plastic jug with the top cut off makes a workable bailer but this heavier built-to-last model has a handle which makes it easier to hold while bailing. 

Bow and Stern Lights - $140.  (Bow light Shown with suction cup mounting base)
 For rowing after dark, carrying a proper red/green bow light and a white all-around stern light is highly recommended. Innovative Lighting inc's LED portable marine running  lights meet  all lawful requirements for use on inland and international waters when properly positioned on your boat. They use  AA batteries, are completely waterproof with  double O-ring Seals, float and have shock resistant  housings.  Bow and  stern lights come with a suction cup mounting base.  

Stormy Seas Ultralight Shorty Inflatable Life Vest - Model SV100 - $179. Red, Neon Green or Purple 
This is the best on the market for comfort, safety and convenience. One fanatical rower commented, "It's like a bike helmet, you know it's there when you need it, but you can't really feel it." We love the clean lines and the fact that there's nothing for your oar handles to hang up on. 21 Lb. buoyancy system.