When writing emails, leave the recipient email field blank until you're ready to send it. This prevents accidental emails.
Before you throw a used Post-it in the trash can, use it to clean your keyboard by running the sticky side between the keys.
Hide emergency money in a sanitary napkin pouch. No one will steal that.
Whenever you buy a product, go to the manufacturer's site and upload the digital version of the manual onto Google Drive or Dropbox. This way, you'll never have to keep paper copies again (or searching the whole house every time you need it).
