Disposable Credit Cards
I use BitWarden to manage my form-fill information, including my credit cards. However, I have recently started using Privacy.com’s virtual credit cards, which generate a new card for each transaction to enhance privacy. Each virtual credit card can be one-time-use “burner” cards or you can set maximum daily/weekly/monthly limits.
This would be a handy feature for BitWarden users, but also a way for BitWarden to make money off of free users via credit card processing fees. Privacy.com also has a enterprise offering, a value added service you could offer to business customers that choose to spin up their own internal password servers.