Sears Credit could have spawned something like Paypal. They were successful with their Discover card, and the Sears card was often young people's first credit card.
They were kings of catalog shopping, and had the logistics and product data to have had a decent online business.
And, they had brand strength in several areas like Kenmore, Craftsman, Land's End and DieHard Batteries. I know they licensed all that out, but way after the brand had peaked.