To actually get the deal going, start talking to people at companies you think might be good acquirers. Start with polite email, or better yet, get introduced through someone you know who respects your work. Good people to talk to would be founders, C-level people, or investors at the potential acquirer. You will probably get better milage from asking a question, like "do you know anyone who would be interested in our assets" rather than going directly to the point of "you should buy our assets for $XX"
If you can't do the deal without a broker, I'd suggest talking to business students at undergrad or MBA levels, potentially someone who's focusing on M&A. You've got to match the scale of the deal, and the size of the upside for a broker with the expectations of the broker. If you are going to get sold for just a few thousand, do it yourself. If we are talking hundres of thousands, there are people who work in the center of your local major metropolitan area who specialize in these things. Get introduced to those people through your lawyer, or through a lawyer you know.