Partners in Crime Phone Case.
Long Distance State Coffee Mug.
Significant Otter BFF Pin.
Best Friend T-Shirts.
Best Friend Wall Art.
Soul Sisters Friendship Necklaces.
You're My Person.
Memory magnets and countdown letters
I know of this very good personalised gift gallery. They have everything that is customisable and they can courier your product also. You can contact them at 9958071919.
You can give a customized cute basket (available on Amazon) with little things she loves from cute anklets to chocolates to a small diary! There's nothing more thoughtful than that.
Chocolate bouquet? With a letter that wishes him/her happy birthday using the names of songs of their favourite artist or a couple of them? Or maybe not happy birthday but something else that'll make that person happy
You can gift him/her a gift hamper in which you can add things that would remind your friend of his/her childhood memories.
If you want to give handmade gift then try a scrapbook with photos ( best memories) or buy dress, watch according to her type .
My friends and I gifted one friend of ours a big poster of her pictures photoshopped into Avengers: endgame poster. You can also think something like this.
A scrap book with photos from your memory lane