I'm a big fan of GameTee, a UK tabletop / video game merch company run by two sisters. They consistently come out with some of the most attractive and inventive products you can find, from game-related pin badges to dice and handmade scented candles, and they do Kickstarters for their newest products.
This is one of their Kickstarters: a D&D-based deck of cards that can be used for anything, from game outcomes to in-game, uh, games. It has uses outside of D&D too; personally, I bought this for use with my NaNo group, since my tarot deck is very sarcastic and takes no prisoners. (I guess that's what you get for buying a deck from The Works...)
In theory, you can divine from anything... but when you're in a café it's a little hard to work from flocks of starlings, and I'm not sure the art of reading coffee foam is as venerated as tea leaves. And for all that writers tend to be a sceptical bunch, you'd be surprised at how popular the tarot deck was for asking questions about plot holes.
Which is (partially) where this comes in. I didn't just buy it for my NaNo group, but as a handy prompt tool for writing, to sit alongside the tarot cards, the Storymatic cards (which I'll admit I did buy just for my NaNo group) and my Story Dice (which I keep misreading upside-down; I thought a flame was a dragon).
Not that I've used it for that yet... I mostly used it to ask whether I should attempt Camp NaNo (a very emphatic no with the Ruin card, and sage advice too as I think I've completed it all of once, finishing The Reconstruction of Kirill) or whether I should continue with drawing (a tentative yes with the Knight card), and whether I should work on a story that's just started forming in my head (an enigmatic yes).
The thing with these cards is, they pretty much ooze quality. The card's nice and thick, well-backed and solid-feeling. The reflective side is incredibly reflective: I showed them to writing friends last Saturday and they were startled too. For reference: the bright blue highlight in the photos is my old Nokia phone cover... which was around a meter away and about a foot below the edge of the desk.
These are seriously nice cards. GameTee's products are always so nicely made so the high quality shouldn't be a surprise, and yet when you handle these cards you're surprised again by just how fantastic something as mundane as a set of cards can really be.
As an aside, they also go beautifully with their purple metal dice. Just in case you needed a little encouragement one way or the other.