In the absence of responses, I am posting this answer to state what I have done as part of my "high-effort" week and what you can do too.
I reviewed just about every question on the site. There are currently less than 300 so it doesn't take long. I upvoted the good questions, answers and comments and, if neccessary, downvoted those not up to scratch. This shows our visitors good examples of questions and answers and it awards the rep to the people who deserve it. This also helps us with our "avid users" stat on Area 51.
Add a better answer
In my opinion, the answers to this question did not have enough substance. I researched the topic and posted what I deem to be a "better" answer.
It's not a compeition to get the highest scoring answer. In this case, there were some excellent answers already. I simply added an answer that provided additional research, facts and links. It's not going to become the new accepted answer but it improves the overall quality of the page for future visitors
Make an existing answer better through editing
Whilst there was absolutely nothing wrong with it, I edited this answer, simply to add a hyperlink to the corresponding rule. A very simple edit but one that adds to the overall quality.
Answer unanswered questions
This is a Q&A site. Have a look at the unanswered questions. Can you answer any of them? Go for it.
I asked some questions. Simple enough; it doesn't need any more explanation.
Offer a bounty
Encourage others to contribute to a question which interests you by offering a bounty for a great answer. It's amazing what people will do for a little extra rep!
Dedicate some time to creating an Epic Answer™
Pick a question that interests you and challenge yourself to create the ultimate answer. This formula 1 question hadn't been answered and I wanted to know the answer too. So, I set some time aside to research and create the best answer I possibly could.
Promote the site
It's quite simple. "Know someone who can answer?" - send them a link. I've also posted a couple of links on forums and reddit asking for experts to help answer for us. Hopefully some of these will sign up and join the community.