For a woman, getting married is the most important moment in her life. When your sister-in-law gets married, as a sister-in-law, you should show some appreciation. Not only will your sister-in-law be touched by your kindness, but it is also a good opportunity to show your appreciation in front of your parents-in-law.
First, think about whether your sister-in-law has anything she likes but doesn't have. If it is within your financial means, give it to her as a gift. After all, she is your sister-in-law, so you should be more particular about wedding gifts, and don't be too shabby.
Or you can give her something valuable, such as platinum/gold jewelry, bracelets, earrings, etc. It will cost more than one thousand. Consider it yourself. Since it is a wedding gift, don't give something too ordinary. Or you can give her a set of silver tableware, which is very fashionable and classy.
If your family has everything, then you must be in good condition. Then give her a home decoration, a very unique artistic lamp, or a craft ornament such as glass, crystal, or gold-plated, which means happiness.