Action papers
Bills, forms and other items needing attention should not disappear into filing.
Reference papers
Frequently used manuals or information can be stored by subject.
Archive for a reason
Retention needs vary for tax, property, legal and warranty records.
Digital copies can help retrieval
Use a clear folder structure and backups where scanning is appropriate.
Practical boundary. Measure first, respect product load limits, and do not improvise wall, ceiling or overhead installations when the structure or appropriate hardware is uncertain.