Okay, this is probably stupidest thing I came up with but I can't it out my head, so I'm going to put it out here
An AU where Bruce Wayne is one of Sharks in Shark Tank
(Note:- I don't actually watch that show, I have watched like 2 episodes of it)
The executives of the show invite Bruce as a joke but he accepts
And now they can't exactly retract the the invite so they decided to let him in show, besides it would be his money that he would be investing
He would absolutely behave like a himbo Dad but still offer suitable deals
"Omg, I love the colour on your packaging, I'm in"
"Mr Fox scolded me and told me I give deals to easily how about this deal"
"Alfred loves Tea, I would love to invest"
"This thing is so fun and weird, Dick would hate me if I don't make a deal"
"Jason is angry at me again, and he loves making food with Alfred, maybe this will help him be less mad at me" (Spoiler he still mad , you buy the kitchen appliances to bribe not shares in it's company)
"I'm sorry, I can't make a deal, Tim already drinks too much Coffee, this would just encourage him drink even more"
"Oh a cat product, Selina and Damian would both be happy, sure why not"
"My fortune teller told me not buy anything related to fruits today sorry I'm out"
The show's ratings went really up because people start watching it for Bruce being a himbo and Proud Dad
So the next season they invite him again
Lex being jealous that they didn't invite him and totally bribing the executives to let him be a Shark
Bruce and Lex end up having the funniest rivalry in show