Everyone is a little short on money now a days so why not make decorating easy on yourself and use things that you already have. If you are an avid scrapbooker, there is one thing that I am sure you have. The scissors that make the fancy edges. Well those are great for decorations too!
Use regular construction paper and who knows what you can create. My kids actually like to make 'halloween snowflakes'. They actually were supposed to be like spiderwebs but we used the fancy scissors and they kind of turned out more like snowflakes, but we like them. In any case, the scissors are great for all kinds of decorations.