What accessories should I buy for Canon 550d?

SD card, buy one with a writing speed of more than 20M, because the writing speed is lower than 15M/S,

The boss will help you put up the screen sticker. Anyway, protect the LCD screen.

UV mirror, used for lenses, is also used to protect lenses. Every shot needs to be installed by your boss. Just use an ordinary condom in the early stage.

Camera bag. It's up to you. I used 20 yuan's. It's been used for a year, and it's quite good. I don't think 1000 is much better than me. I don't use it often. I have to buy a moistureproof box.

Optional: spare battery, the battery is very easy to use, you don't need to buy it, and you can't buy the original one.

Handle, cable release device, remote controller, flash lamp, tripod, cleaning kit.

Accessories are the key for the boss to make money. Try to buy it online.