I want to sell on Ebay. Mostly trading cards. Do I need a camera or scanner? How do I get pictures on Ebay?

Alot of people say they use a scanner for trading cards. But I have more than cards I want to sell. I want to sell alot of things around this house, like VHS tapes, DVD's, car amplifiers, clothes. So which would be the best investment? A scanner or camera?
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