After a month I found the note under a stack of unanswered emails. The cylinder was gone. In its place a smear of cerulean on my wrist that matched a sky I hadn’t noticed until that afternoon. I couldn't prove the package was anything other than an elaborate prank—or a pamphlet for making your life intentionally stranger—but the promise I had made was real. It sat in my pocket like a spare coin: small, hard, and somehow worth spending.