something made from silver usually
The 25th anniversary is traditionally the silver anniversary, so a silver watch would be a great gift for that occasion.
leather
Wood is traditionally the 5th Wedding Anniversary, but in the modern symbols it is the 6th anniversary that is wood.
The traditional gift for the 25th anniversary is silver.
Wooden anniversary
Silver.
China (as in porcelain) is the traditional gift for the twentieth anniversary.
Traditional: Silver
Traditionally, the gift for 15 years is crystal, but watches are the modern version.
Each year there are special gifts for each anniversary. Many years will have both a traditional and a modern gift. Some years it is the same gift for both. For the 23rd wedding anniversary the gift is silver plate, this is true for both traditional and modern. You can choose any gift that is silver plated. Some examples of things to think about include, picture frames, silver plated jewelry, photo albums that are silver plated, and other items made of this material
This basket is good for any anniversary and you might want to buy an iris to go along with the basket as it is the flower for the 25th anniversary (also known as the Silver).
silver plate