What accessories should I buy for EOS 7D SLR kit?

In addition to the official standards, it is suggested to add the following items as needed:

1, UV mirror, polarizer;

It is recommended to buy 2 cards for Lexar or sandisk brand cf cards with a speed of 2.400x and above, each card is 8g;

3. Photographic bag (recommended triangle diagonal bag);

4. Spare auxiliary factory or original battery;

5, fuselage lens cleaning kit;

The above are basically necessary, so consider whether to choose the following accessories according to the situation:

Flash, reflector, tripod, rain shield, cold shield, remote controller, neodymium mirror, GND mirror, etc.