Scanning documents with your own printer / scanner
If you have a flatbed scanner or scanner-printer attached to your computer or laptop, then you can use this device to scan your documents. It is not particulary important which document format the scanner gives you - PDF or JPEG image are the most common and can be viewed on almost any device.
Some documents are fine to be photographed with a mobile device and then emailed or used as an image in another document.
Microsoft Office Lens
Microsoft Office Lens is an app (iPhone/iPad | Android) that allows you to use your mobile device as a portable scanner. It is completely free, very easy to use and can be linked to your university OneDrive account by simply logging into it. It will create jpeg image / PDF / Word file (you can choose) from any scanned paper document.
Office Lens intro video
Direct link to video on YouTube: https://youtu.be/Z0iZ8l4b3k8