A UPS or an uninterruptible power supply is helpful for home-based freelance writers in the Philippines where brownouts are part of life.
I bought this one on the picture from CD-R King, where some of the cheapest electronic supplies are sold, and it has been helpful. It gives me up to 15 minutes of time to save my files or send a rush email before the PC finally gives out.
This UPS also has a voltage regulator, so it’s two-in-one. The white power strip beside it is also helpful and saves bits of electricity. PCs still use electricity even if they’re off but unplugged from the electric outlet. With the power strip, you don’t have to unplug anything everytime you stop working on your PC.