You can use this Recipe to create a shared shopping list that everyone can add to. This Recipe will add the text you enter to a Dropbox file, which you can share with the people you live with along with this Recipe!
Then
Append to a text file
This Action will append to a text file as determined by the file name and folder path you specify. Once a file’s size reaches 2MB a new file will be created.
Explore more great ways to automate Dropbox and Note widget