Since the HTC Desire HD is considered by some to be the EVO's international brethren and families are supposed to share everything, then feel free to grab the 17 static wallpapers, 10 ringtones, and 39 notification sounds that xda-developers forum member v-b-n found while browsing HTC Hub. You can download the entire pack of files (3.67MB RAR) and check them out after you extract the RAR and move the contents to your SD card. The EVO will automatically add all the audio files into the regular ringtone/notification menus, and the wallpapers will be available through the Gallery.
Those little thumbnails you see above are the wallpapers. They're all in 960 x 800 resolution to achieve that parallax effect Android is known for, so don't crop or resize before loading them onto your EVO. The ringtones and notifications have names that generally do a poor job of describing what they sound like, but some of them are actually pretty good. And who can argue with 49 new sounds and 17 new wallpapers you can put on your EVO for free?[xda-developers]