PowerPoint presentations. Adding a few Christmas Clipart images or other holiday images could really spice up a PowerPoint during that time of year.
As their website mentions, "Many Flickr users have chosen to offer their work under a Creative Commons license, and you can browse or search through content under each type of license." Flickr is a major source of image for the open source community and helps in promoting the unfettered exchange of information over the internet. The WP Plugin called Wp-Inject assists you in searching for images on flickr and then adding them to your articles in a jiffy.
Typically, you will find volleyball clipart on the Internet offered at various websites. They are usually available for free, and you can use them for anything you like. Perhaps you need some for your personal website about volleyball, or for a presentation you are preparing, or you're just fond of collecting clipart. You can also use such clipart for printing designs for your shirts, volleyball jerseys and posters. Clipart comes in different formats such as still graphic, gif or animated. There are also books and magazines that have pages of volleyball clipart available.