We’ve added to our bookmark collection. Currently we have chicken, monstera leaf, unicorn and kitten bookmark. We use various different acrylic patterns and cut the shape. 
The bookmark slides over your page. Be mindful you may have to put over a few pages to make sure there is no page tearing. 
Our kitten bookmark is in a glitter acrylic or spackle soft pink pastel color. You can choose in the options on the color preference you’d like. 
It is plastic so handle with care as they can snap if stretched out or pulled.