Everyone is paired with two people - one who they send a gift to, and another that they receive a gift from. These will be different people. Unless you specifically make contact, the person you send a gift to doesn’t know who it’s from.
It’s obviously dependent on everyone sending a gift though.
My gift arrived yesterday, all the way from Indonesia. A roll of Japanese film, a roll of JCH 400, a traditional Indonesian drink that you mix with hot water, a really nice hand crafted letter, and an empty film can that's been turned into a mini flower holder. I've found my santa on Instagram and she is a graphic designer and does a lot of water colour illustration. She seems cool!
First year for me and I received a great package from Ohio. A box of 120 Ektar (yes, a pro pack of 5 rolls), a 35mm roll of ultra max, a book on Retro Cameras, a gorillapod, some local chocolate covered potato chips and three dark room prints from my Santa!