For a happy event like a good sister's engagement, you can choose some wedding-themed small ornaments or accessories for couples to give her. There are many gifts of this type, as long as they can represent blessings and beautiful love.
First, you can give your good sister a unique and creative small gift to express your blessing for their beautiful marriage, such as this beautiful crystal piano music box. Crystal symbolizes the purity and beauty of love. Sisters are girls, so she will definitely like this shiny music box. What's more special is that the piano cover of this music box can be printed with photos. Printing the wedding photos of sisters should be unique among the blessing gifts of everyone.
Second, the choice of good sister's engagement gift can also consider high-end or practical gifts. Personally, I think a pair of high-quality couple watches is a good choice. I recommend this Casio couple watch. It is exquisitely made and stylishly designed. It is the best decoration gift for young couples who pursue fashion. Moreover, giving watches as engagement gifts is also a tradition, implying that the newlyweds will be together every minute and every second.
Third, young people like individuality and uniqueness. I believe your good sisters will like creative engagement gifts more. The creative red wine recommended here is very popular recently. It can be customized with photos and patterns according to your requirements. It is fashionable, creative and has some commemorative significance.