For my game, I’d say it would fit best as a handwritten diary or a weathered notebook, filled with fragmented notes, dates, and unsettling observations. Something you’d find abandoned in an old house, with torn pages and cryptic hints scribbled in the margins.
If I had to pick another piece of merch, maybe a simple wall calendar and an old clock, both slightly damaged, since time and dates play an important role in the game. It’s not flashy merch, but it fits the slow, eerie, story-driven experience I’m aiming for...