NFT (2013)
NFTs or Non-Fungible (read replaceable/interchangeable) Tokens were first conceived as colored coins which got issued on Blockchain in 2012-2013.
The idea behind these coins was to mimic real-world assets like coupons, shares, digital collectibles, and digital art.
Thanks to the 2020 pandemic, people started spending a lot more time over the Internet which played a huge role in the explosion of NFTs into the mainstream.