Papers are a problem.
I purchased a scanner that will scan 25 pages/min, both sides at one time. As most of us have computers, any documents worth keeping, maybe saved as PDF files which can be searchable if optical character recognition is enabled during the file creation process.
Of course, good file habits are needed for digital files also as hard drives can quickly become cluttered. Outdated digital files need to be purged also but disposing of them is not so backbreaking and doesn't require much physical space.
Most utility and other bills may now be obtained over the web thereby reducing the amount of paper entering the home.
Home Depot will e-mail a receipt to your email address before you even leave the store. If you pay by credit card or debit card, your email address will be linked to the card and you will be prompted to accept the email every time the card is used.
Receipts and business cards are easily scanned with a phone camera as there are apps for that purpose which will also create PDF files.
Files maybe stored locally but need to be backed-up as hard drives do fail. DropBox, One-Drive, Google Drive are all also storage options, many of which include some space at no-charge. EverNote and One Note are also options for entering and keeping data directly.
Here's a link to ideas on going paperless: http://www.documentsnap.com