My brother's greetings to my sister.

That depends on whether your sister is below 12 or above. If she is below 12, you can consider a teddy bear, but if she is above 12, she will think that you always treat her like a child. You can give her a lady's watch (not too cartoon, but shiny one), and she will like it very much. The psychological development of girls should be early. You can encourage her to take good care of herself when she is one year older. It's easy to say that you/kloc-are under 0/2 years old. Give her a toy she has always wanted (Barbie is recommended), then touch her head and say, "Be happy in the future."