“为了换换口味”可以翻译为 “to have a change of pace” 或者 “for a change of taste/flavor” 。
例如：
We decided to eat at a Thai restaurant to have a change of pace.（为了换换口味，我们决定去一家泰国餐厅吃饭。 ）
I'm going to try a new recipe for dinner for a change of taste.（为了换换口味，晚餐我打算尝试一个新食谱。 ）