“用作装饰品地”可以表达为 “used as decorative items/ornaments” 或 “serving as decorations”。
“used as decorative items/ornaments” 强调物品被当作装饰品来使用，其中 “decorative items” 和 “ornaments” 都指装饰品。
“serving as decorations” 侧重于表达物品起到装饰的作用。
例如：
These small figurines are used as decorative items in the living room.（这些小雕像被用作客厅的装饰品。）
The colorful ribbons are serving as decorations on the gift boxes.（这些彩色的丝带被用作礼品盒上的装饰。）