Hammer CSV is an extension of the Satellite hammer administration tool, built by Thomas McKay. The main idea behind it was to generate machine-parsable export of different Satellite configurations that can be easily applied among Organizations of same/different Satellite servers.

What is developed so far is:

activation-keys
architectures
compute-profiles
compute-resources
containers
content-hosts
content-view-filters
content-views
domains
host-collections
host-groups
hosts
installation-media
job-templates
lifecycle-environments
locations
operating-systems
organizations
partition-tables
products
provisioning-templates
puppet-environments
puppet-facts
puppet-reports
reports
roles
settings
smart-proxies
subnets
subscriptions
sync-plans
users

And these are a few ideas of what can be done :

Export Content Views and Composite Content Views between Satellites, provided that you are using date-based CV filters.
Backup your settings to a git repo so you can understand when changes have been done.
Export your hosts/content-hosts to a list.

I put together a very simple export script that can be used to poke around what is actually being exported :

Update 2017-08-29: There is a very nice blog post by Rich Jerrido that covers advanced hammer csv usage and reporting of custom fields, available at: Subscription-manager for the former Red Hat Network User: Part 12 - Subscription Reporting Tools

Happy hacking!