Ok, an old one:

You can easily have "phone", "contacts" and "messaging" icons on every desktop by replicating their shortcuts in “/usr/share/applications/hildon/”

The shortcuts are:
"rtcom-call-ui.desktop" - phone
"rtcom-messaging-ui.desktop" - conversations
"osso-addressbook.desktop" - contacts

And here's how you can easily access those files if you're not familiar with terminal.