What was the significance of the artifacts that let the kids enter the session? They just kinda seemed random

John’s bite into the apple seems kind of way too symbolic to be unintentional, many have compared it to Eve biting into the Apple, Humanity’s original Sin- Although in a more Gnostic Context, as Homestuck tends to do things, this is seen as a Good Thing, Sophia giving Humanity an escape from the Cruel, Material world, which sounds about right with the Kids being transported into the Medium, away from their dying world, bathed by the Light of Skaia.

The rest are all kind of thematic. Rose’s bottle is evocative of her struggle with her Mother, and Alcohol is seen as a Void-Coded thing. The smashing of the bottle also reminded me the thing you do with a ship that’s about to board for the first time, if I recall, right?

Dave’s is an Egg, he needs to Wait, it needs Time for him to enter. It’s another item that symbolizes a beginning of a life, and specifically, it also has Gnostic Ties, the bird breaks through the shell to begin its life, sometimes to Create a World, one must be Destroyed, and Dave actually has this same Egg symbolism come up again with the Cue Ball.

Jade’s is Bec, a Symbol of Space, and in a way you could say it’s also foreshadowing about their struggle trying to defeat Bec Noir, or perhaps the fact that Jade’s going to fuse with Bec and basically consume him. It’s interesting to note both Rose and Jade were put to test with a leap of faith- Literally in Rose’s case, and figuratively with Jade shooting a completely blind shot.