Android 'notes' icon

I am making a 'notes' application and i need an Android launcher icon 128x128 pixels. That icon should be royalty free - free to use on my commercial product. The idea behind the application is that it stores the Notes in the Cloud (Google cloud). So i want to convince users that their notes will 'Live forever' and that they will be secure. So i want an icon that displays a note, and somehow make them understand that it uses cloud technology to safely store & sync data The icon that i currently use and quite like is <[login to view URL]> but it is free only for non commercial apps, so i'll pick the best idea/design on an icon !!