I've Tapped Into The Higher Frequencies

Postcard credit: "Ryoanji Temple Rock Garden" (Mizuno Junji, Undated).

Sticker: Secret Sleepover Society, purchased from Teepublic.

Cards:

• "The Ultra-Violet" (Andrew T. Kalichack, 1996), from Mythos, card game by Charlie Krank, published by Chaosium.
• "Dark Energy" (Kyle Key, 2016), from Control, card game by Mattox Shuler, published by Keymaster Games.