Internet is filled with quality vector and clipart graphics, stock images, animation, illustrations, abundant drawings and layouts; a rapid search would help you to get a good one from the Internet, even in a range of image sizes. You can use these appropriate clips arts for single non-commercial projects (it doesn't require any permission) along with the business or commercial projects (in this case, you should opt for fee-based stock images). This is the reason why many crafters think that free digital images are not so worthy and people will refrain from getting them.
You must consider the differences between free clipart graphics and stock digital graphic images designed by professionals. These are two different items as apples and oranges, in fact. A professionally designed artistic graphic object is an artist’s creative mind creation. The picture is unique; it is believed to look like a separate digital object. You can customize or modify the image so that an exclusive edition is formed. This is high quality stuff. Whereas, clipart is a lower class colored graphic destined for Internet use only, along with the fact it is believed to be rather created on the background. People who get the difference and the needs the digitals will be used for, would certainly look out for professionally designed digital graphics as well as ingeniously designed clipart packages too.