Get a proper safelight. I personally use an OC filter safe light. Look at the data sheet for whatever paper you are going to use and it will tell you which safelight to use. I have never gotten a safelight on it's own. It is usually cheaper to get everything as a package deal from someone who is getting rid of their darkroom.
Originally Posted by zackesch
A lot of bulbs may look like safelights but they are not. Unless it is specifically made for darkrooms you may be wasting your money.
Craigslist is a great source for local photo equipment. I've gotten most of my stuff through there. Your local market may differ.