I used playing cards once to get plot ideas. I had a bit of Dungeons and Dragons influence when I was making the stories based on them. I tended to intuit them depending on how they lined up.

Usually I would draw one card. It's number would be the amount of additional cards I would draw. Often I would have the location and/or circumstances (vore, gluttony/enfattening, general quest with genre determined) already determined ahead of time.

The Numbers 1-10 usually mean numbers. J,K,Q are the blackjack value of 10. Aces are typically 11s but could be 1s but were most of the time 11s.

Hearts are typically allies, often endearing alllies. J,K,Qs are high profile allies and often singular people. Jacks possibly were talented but red jacks might've been them as well.
In a vorish scenario they are willing prey.
In a weight gain gluttonous scenario they could be food items to eat or could be feeders or other helpers. They could also mean an increas in size.
They may also be ones rescued in a general quest or allies that don't fight persay.

Diamonds are usually alllies of a sort, they can be ones that will fight with you. They can also mean treasure.
In a vorish scenario they are treasures in that they are guaranteed prey but may not be willing but don't resist if you would eat them.
In a gluttony they mean treasures, stock, food or buying food. Aces tend to mean that it is a superb amount of treasure, food stocks or food to eat, or a lot of money to buy food.

Clubs are typically encounters but without fighting while spades definitely have a battle. Clubs are generally neutral but can be hostile people but if they are they don't fight you. Clubs may also be fighting as I tended to do those as fights with spades.
In a weight gain/enfattening/gluttony scenario, if it is Ace then you are just overcome and that person eats more than you and ends up bigger in weight gain or size scenarios.

Aces are typically gods or very specialized. Hearts are on your side as allies, clubs are neutrals, diamonds may mean they give you something of value or fight with you.

Jokers are wild as they mean but are often villains but depends on whether it is red or black. Red jokers are often wild cards but probably allies or they may switch on you or go their own way. Black jokers could be allies but definitely could go against you.

Spades often were always full confrontations. If a K,Q,J they were singular antagonists or big bads.
Spades in a weight gain/enfattening/gluttony scenario are like a food contest, force feeding, or otherwise unwilling to eat so much food or gain weight. I also put unwilling lackey, somewhat skilled artisan like a chef that is confronting you, or otherwise a contest that is to eat more against others.

If trying to use cards for a setting: Clubs tended to be buildings, outdoor places, but otherwise netural to you. Spades were hostile locations, sometimes outdoor locations. I would probably say they could be underground locations, clubs above ground neutral locations. Hearts were places that would help you, like a temple or otherwise allied. Diamonds would probably be banks or secure locations. They could also just be helpful in a certain way or places that would give you treasure (banks again).

I may update this later.