[ame=http://www.youtube.com/watch?v=ZZ4t70-uLLk]YouTube - ‪OS X Trash Sound For Notes, Apps, & Mail With RemovedSound On iPhone & iPod Touch - iOS Vlog 483‬‏[/ame]
RemovedSound is a free, fun Cydia tweak that will add the OS X trash sound to your iPhone or iPod Touch. It currently doesn't work on the iPad but hopefully that can be fixed within an update. Whenever you delete Mail, Notes, or Apps you will get the Trash sound that you normally hear on OS X. This just adds a bit of fun and some extra sounds to your device, making it a bit more "Apple-y". Check out RemovedSound in The Cydia Store for free!