Use your very own domain name and point it to your Elvanto account. For example, when someone in your church goes to database.yourdomain.com, it will load up your Elvanto account so they can log in as per normal.
Set up multiple layouts and give different departments their own subdomain. You could set up the Music Team to have a different layout to the Kids Team, for example.
Upload iOS Home Screen Icon
When a volunteer saves your account to the Home Screen of their iPhone or iPad, upload a custom image to be displayed as the thumbnail.