I make regular use of Oblique Strategies when working. For those unfamiliar, Oblique Strategies ('Over One Hundred Worthwhile Dilemmas') is a deck of cards created originally by Peter Schmidt and Brian Eno to complement music development. Each card is a somewhat gnomic statement or prompt. Wikipedia has some examples, and you can 'pull' from the deck via this site.
They aren't for everyone. Some folk find them frustratingly, useless gnomic. For me, that's part of the point -- rarely does what's written on the card directly answer a question (though sometimes it does, and that feels amazing). It's more about adding in a new factor that lets you reframe the problem or question.
I view this as a kind of creative entropy. So much of creativity for me is about structure and explicit tools. Sometimes, I need to inject something more chaotic to help break through to the next stage.
I find Oblique Strategies best for clearing a logjam -- when I'm choosing between a set of competing possibilities that all seem differently good. Failing that, I need to frame the problem or question as clearly as possible. Honestly, this is a huge part of the exercise, and a reason I like the physicality of the cards. I sit and shuffle them until it 'feels right', which is to say: until I'm focused on the actual problem and am holding a clear articulation of it in my mind. That way, even treating the deck like a glorified fidget spinner is impactful.
What the cards are less good at, though, is injecting something more substantive into the process, like introducing a new unexpected element (character, concept, setting, something of that nature) -- a more 'generative' form of entropy. I've started sniffing around for something to fill that purpose, but haven't chanced upon. with anything satisfying so far.
I imagine this is one reason creative people sometimes include Tarot in their processes. Likewise, it's a candidate for using machine learning systems as development 'partners'. But I might get more mileage at this point by cannibalising a Dixit deck.