Head to this website to make your own sound clips. Audacity® is a free, open source software for recording and editing sounds. You can then import these into movie maker, powerpoint, etc. Once you record your sound clip, go to "file" and export it to save it as a WAV file. You could also record students reading from the beginning of the year and end of the year to show their growth. Any other ideas? Add them here under the comments. Have fun!