Are you taking photos or videos as part of your project? Keep track of them as you go with consistent file names and folders. Locations and dates are good ways to keep track.
Did you know that there is a lot of information contained in the image file itself? In the metadata. Use this info to your advantage https://www.snopes.com/crime/warnings/smartphonepix.asp .
Overview for photographers by photographers: http://photometadata.org/
Technical details about the metadata: https://commons.wikimedia.org/wiki/Commons:Exif
Making your file names descriptive and standardized will make them easy to understand later and more useful to others. Choose a file naming convention, detail it in a readme.txt file, and stick with it.Consider including: