A shopping list is read as needs, plans and the effort of not forgetting anything. Losing it stands for worry about keeping track of everything at once.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.