Cologne created a display from shirts provided by fans for their Bundesliga home game against Mainz on Sunday.
Germany's top flight this weekend returned from a two-month suspension caused by the coronavirus pandemic, though all remaining fixtures will be played behind closed doors.
Cologne asked supporters if they wanted any memorabilia placed in the stands to ensure they still had some kind of presence in the RheinEnergieStadion.
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The club then used the shirts, scarves and stuffed replicas of goat mascot Hennes to create a brilliant show - known as a tifo - out of the empty seats.