Giant Icons

Gigant Icons is a free widget app that lets you give larger (or rather gigantic) icons to the apps on your home screens.
For each individual app, you can make the icon larger. You can choose from different sizes, ranging from double the size of the original to a huge icon that almost fills the screen on its own.
You can also combine icons of different sizes on one screen.
To generate those large icons, Gigant Icons actually just uses the app’s widget.
One thing to note is that the icons don’t stay large when you rotate your phone from vertical to horizontal. So it’s best to set the Android setting ‘Auto rotate’ to the value ‘Vertical’.