In addition to the time you spend each day networking, responding to job postings, attending career fairs, and following up by phone on your activities, you should find a way to volunteer your time in a way that leverages your professional experiences. By doing so, you'll realize a number of rewards as a direct result of your investment of time and subject matter expertise.
 
The first thing you'll recognize is a boost in your mental health. You will feel more productive and you will keep your skills sharp at a time when you would normally be sitting idle. You will also be able to document your volunteer activities on the profiles you've created on sites such as LinkedIn. For those of us who are in transition, having this on your profile is much more attractive to a potential employer than having your last job block abruptly end with the date you were laid off. It shows them that you are serious about your career, and that you will have a much shorter ramp-up time should they hire you. It also affords you an opportunity to gain valuable skills you may need in order to make yourself more attractive to potential employers, or to update skills that may be in need of a shot in the arm. For example, if you are a marketing and communications professional, and have no exposure to one of the industry standard writing styles, by volunteering to work on a project that utilizes the Chicago Manual of Style, you can now relate that information in your profile and on your resume under the volunteer activities block. The experience can also be documented  in your cover letters and in face to face interviews. Lastly, you'll be providing a valuable service to your community. Most of these volunteer opportunities are with local non-profits, and they are always in need of people's generosity in order to drive their mission. The small investment of time will pay off in spades in documentable experience, as well as through your networking efforts with others involved in these volunteer efforts.
 
Trust me, I'm living proof that volunteerism works. ;-)