Getting gifts for best friends is awesome and soo thoughtful but quite easy. :)
Get something that symbolizes friendship. Like a friendship braclets for the three of you guys or necklace or anklebraclet. I have an anklebraclet with my best friend. You could also get her something that symbolizes one of your inside jokes with the two of them (make it clean, lol)
If you want to go ordinary, buy them clothes at their favorite stores. That is still a great gift :)
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