1. You can wear products endorsed by idols, such as clothes and digital products.

2. Make a brand with the name of the idol printed on it, which can be lit. I heard a word 100.

3. Fireworks stick: When singing lyric songs, it's best for many people to ignite and sway collectively.

4. Surprise: If the day of the concert happens to be the birthday of an important idol, you can write a banner wishing XXX a happy birthday for the idol to see at the concert.

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