Paper copies are no replacement for sound backup procedures! But, even after making current backups, archived backups, and off-site backups, you still believe that your computer will crash, then these reports will help you re-create your books.
These can be huge reports, so run them only when you start losing sleep. If you commit to running them on a regular basis, try to do so on a memorable cut-off date; that is, the end of a month, quarter, or year.
To make a paper backup of your data run these reports:
Accounts List [Detail] report
Activities List report
Activity Slip [Activity Detail] report
Card File [Detail] report
Items List [Summary] report
Payroll Activity [Detail] report
Aged Receivables [Detail] report
Aged Payables [Detail] report
Summary Trial Balance report