If it’s a conventional bank that deals in riba and if it’s brand name is displayed on the key chain then you shouldn’t use it as it would be like endorsing the bank.

There is key chain in my home given by a bank. Can we use it?

Riba | November 22, 2017 2:58 pm
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I was planning to invest in some shares in US based companies dealing in lethium manufacturing and supply.however some of these companies borrow funds from banks. Does this impact my investment ?
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If a father takes a huge loan in the name of a son against his will (because the son knows riba is haram) from the bank for business purposes and the son does not want profit from the business because he does not want it as he wants to avoid any form of riba. In this case, does the son fall in any sin of taking riba?