Even though your site may not be generating a ton of traffic now, I'm sure your goal is that someday it will, right?
So why not take some time to put together an "advertising plan". What I mean is, simply determine what sorts of income you are willing to accept if you receive solicitations… for paid posts, banner advertising, specific campaigns, etc. and what you will charge. And, also determine what you will not accept… solicitations for paid links or whatever else might just not be up your alley.
You can search other websites… sometimes they have listed right on the site what they charge. Here's an example: http://advertising.yourway.net…..r-way/ (although not PF, it's a good example).
At some point, you will need to adjust your prices… since your traffic will grow and your value will increase. And you will continually add new ways to generate income. I don't recommend posting it all on your site like in the example, but having it somewhere is important.
It doesn't have to take days and days to create. Sit down for 45 minutes, focus and getter' done.