Alkaline AA batteries (LR6) - 3 pack : ID 3521 : $2.25 : Adafruit Industries, Unique & fun DIY electronics and kits
Duracell Coppertop Alkaline AA Battery Charger with 4 AA Rechargeable Batteries Included (8 Total Batteries) 004133304308 - The Home Depot
Amazon.com: Tenergy 1.5V D Alkaline LR20 Battery, High Performance D Non-Rechargeable Batteries for Clocks, Remotes, Toys & Electronic Devices, Replacement D Cell Batteries, 24-Pack : Health & Household
Rayovac High Energy AA Batteries (60-Pack), Double A Alkaline Batteries 815-60PPJ - The Home Depot