Some people might shy away from clipart because they don't think of it, or they think it's too much work. If you find the clipart in a clipart book that will be too much work and it won't look good because you'll have to use a photocopier to resize it and then the quality degrades.
These will be your memories, you should make them as you see fit! And if you need an extra copy of an invitation or an announcement you don't have to worry about the time it takes to reorder or have to wait weeks for delivery. You'll save on time and shipping costs, and be able use your money for other special baby needs.
Take advantage of all the internet has to offer you for your scrapbooking projects. Many of the items mentioned above are available free, while some are for sale. Regardless, the items can be just what you need to make your pages unique and beautiful. You will not only save money by using free clipart and then tweaking it on Adobe Photoshop to make your own, but you'll save time by shopping or acquiring items online in the comfort of your home.