Lufthansa really went all in with the World Cup and the Mannschaft (the nickname given to the German national football team).
A month ago, in a flight from Sofia to Munich, I was treated with this (very good) chocolate with my meal.
Whilst I didn't get the chance to hop on it, I then spotted an actually repainted A321 on the MUC tarmac, the Fanhansa Airbus.
They actually did it! They've rebranded 7 planes, including a B747-8.
Yes, I know, I know, it's just football and it's just sponsorship, but it's all nicely done and made with the heart—it also spurred endless fun conversations with various LH crews (I'm a regular of this airline) about which team I support (Greece? Switzerland?).
And just for the eyes, a livery making-of video :