Switch to fluorescent bulbs

While fluorescent bulbs have been available for many years, the price and the color spectrum of the produced light make the latest generation bulbs useful in many applications. Fluorescent bulbs produce more light per watt than heat and can use one quarter of the power of a standard bulb!

Size the bulb appropriately for your needs. Amazon has some really good deals on these two models:

Globe 23-Watt Mini Compact Fluorescent Spiral Bulb (100-Watt Incandescent Equivalent), Cool White, 4-Pack #48426

Globe 13-Watt Ultra-Mini Compact Fluorescent Spiral Bulb (60-Watt Incandescent Equivalent), Cool White, 4-Pack #48412