The soft, bell-like kalimba is read as gentleness, calm and small joys plucked one note at a time. It stands for soothing yourself with simple, repeated comfort.
Has this come up in your dreams before? What was going on in your life then?
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.