Because newsletter templates are available in all variety of lengths and sizes, there is really no limit to the content that you could potentially write. Keep in mind, however, that you should probably keep down your word count to a level that people are comfortable reading. While you may think everything that you are spouting off is fascinating, it's helpful to first sit down and make an outline of what you want your main message to be, or what the major news is that you are trying to share.
Some enthusiasts go out and buy a lot of scrapbooking templates, and that's really fine. But sometimes, you don't feel like going out, or you don't want to spend a little more money for your hobby. That doesn't mean that you should stop scrapbooking, though. You can always go online for your scrapbooking templates, and there are a lot of websites offering beautiful templates for free, so you don't have to pull out your wallet or credit card. All you have to do is download and print them, and you're all set.