Ironically there is a tool within LMS - netshow - that allows you to archive output of show commands run across multiple devices.

The output is a plain text file but it could be parsed by Excel into a csv relatively easily.

Reference: 

http://www.cisco.com/c/en/us/td/docs/net_mgmt/ciscoworks_lan_management_solution/4-2/user/guide/lms_monitor/lms_mnt/mnt-netshow.html

If you want more customization anbd don't want to use LMS, then you could script something together. You might look at the open source netmiko project on Github for some ideas:

https://github.com/ktbyers/netmiko

If you use it, be sure to add "dev ops" to your resume. Your cred will jump +5. :)