The Compact Mirror is a date gift that can be used to get rid of unwanted affection tokens. These are usually tokens presenting the trait the current character on a date likes the least (as those yield fewer points than other Affection tokens). If newly converted tokens are in difficult locations, the Pink Lily or the Sunflower can be used.

Least desired traits
Flirtation Flirtation Beli, Celeste, Venus
Romance Romance Audrey, Jessie, Kyanna
Sexualitly Sexuality Momo, Nikki, Tiffany
Talent Talent Aiko, Kyu, Lola