Continue the Northcrest Conspiracy story, the questlog is your friend.
the cumrag is obtained at torben's house, if gunnar's there then you talk and do 'small task' for him, laundry is not always available.
Hmm... oh, try to roam at night in the residential area, you can find Everett meeting up with Booner having sex. If you confront him (and keep it a secret) then the next time when you visit him you talk about the package.
The only place where you can get the cumrag is at Torben's house, keep spamming his house until Gunnar shows up with a greeting.