Select the color, add a gift message (which can be quite long as it comes on an attached card). Let your friend know that you are thinking about her, even when you aren't with her.
https://www.etsy.com/listing/1397962310/pocket-hug-crocheted-heart-small-gift?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=mailable+birthday+gifts&ref=sr_gallery-1-7&sts=1&referrer_page_guid=f67d413a803.12d4bbe2516742758820.00&organic_search_click=1&variation1=3221146260