I've been interested in the late-time characteristics of novae for a long time. Kent Honeycutt and I started a project about a decade ago to look at some old novae in the hopes of finding a few dwarf novae in the bunch; I have hundreds of deep frames surrounding about 30 objects in Sgr/Sco. Someday I will return to that project, maybe with a volunteer or two!
In the meantime, while bringing the AAVSOnet 61cm telescopes on-line, I have been concentrating on getting deep images of more recent novae - say, within the past decade. There are approximately 100 such novae, and I currently have data on about 20 of them. The others will be covered over the next few months. I gave a paper on the current status of this project at the EuroVS meeting this past weekend; Arto Oksansen says that he will post the pdf of my Powerpoint presentation on their web site.
Novae outbursts are typically about 9 magnitudes, and most of the ones discovered reach a peak of V=9-10 or so. This means in quiescence they should be about 18th magnitude, which is not that difficult to do with the typical amateur telescope + CCD of today. So monitoring of old novae is a simple project in which to get involved. As I go along, I'll develop a list of potential candidates for monitoring - those that are reasonably bright and in isolated regions. The typical old nova, of course, sits in the plane of the Milky Way, often in crowded regions like Sagittarius, and therefore very difficult to measure with the crowding. However, there will be plenty of other targets!