Play a Charity Show
Playing charity shows is a mainstay of Indie bands everywhere. There are many benefits to doing a show like this, not the least of which, the fact that you are (hopefully) helping out a good cause. This goes along with our idea of piggybacking. In this case, promoting a charity, where they will promote you, because they have an interest in bringing in your fans, and other music lovers to the show.
Normally, many other bands play at these benefits, and you'll get to play to new audiences. It's also a great time to meet new people, and hear other bands. The other benefits are that you normally get a news mention, as well as a mention on their website. It's sometimes good material to use for press releases as well. Some newspapers are looking for just the right little blurb to use in their Weekend sections, and these charity shows are often good for that.