The Blue French Horn
The blue french horn is an important symbol throughout the series as it is the start of many things. Ted and Robin notice it on their first date and joke about it. Later that episode, Ted steals the french horn and shows up outside Robin's apartment. While this colored instrument represents the start of Ted and Robin's crazy love, it also is the beginning of Ted's search for love. The french horn eventually ends up with Ted, and is last shown when Ted holds it up outside Robin's apartment for a second time.
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