The Atomic Shop is accessible from the game menu after leaving Vault 76 for the first time. The store sells cosmetics, C.A.M.P. objects, photo mode poses and frames, emotes, and icons. Purchases by a player will carry over to all of a player's characters. Objects originating from or modified by an item from the Atomic Shop can not be dropped or traded to other players.
The canon status of content from the Atomic Shop was discussed by Emil Pagliarulo in August 2020. Pagliarulo stated that the status of many purchasable objects in the shop do not strictly confine to established lore and canon, as the internal rules for what can be placed in the Atomic Shop are very loose. Some items may have conflicting status within the lore, but are placed in the Atomic Shop because of their "fun factor."
¹The item is not sold separately and is only available as part of a bundle. The bundle is shown in the tooltip.
²The item is not purchasable with atoms. It is acquired through other means such as Fallout 1st or Twitch Prime, but is viewable in the Atomic Shop interface.
↑Fallout 76: Is the Atomic Shop or Creation Club considered canon?: Emil Pagliarulo: "Atomic Shop is a lot...we found that Atomic Shop tends to not be canon so much, it's a lot looser. Just because it's, y'know, stuff that you purchase or use Atoms get into your game that is, like... there's a big fun factor there. There's a lot of stuff in Atomic Shop that we could take out because it's not strictly Fallout canon, and then players would be bummed. Because it's in a live multiplayer game, you... it's always a judgement call, it's tough. There's a lot of stuff that's... the canon rules are a lot lighter with the Atomic Shop stuff. Because we want people to have what they want and just have fun." Note: This video is an excerpt from a longer interview at Gamescom 2020.