Crypto design t-shirts typically feature graphics or illustrations related to cryptocurrency and blockchain technology. These shirts may depict images of popular cryptocurrencies such as Bitcoin, Ethereum, or Litecoin, as well as related symbols such as the Bitcoin logo. They may also feature illustrations or graphics related to blockchain technology, such as computer code or a chain of blocks. The designs may include playful or whimsical illustrations, as well as more serious or technical-looking designs. Some popular crypto t-shirt designs include slogans or catchphrases related to cryptocurrency and blockchain, such as "HODL" (a popular term meaning to hold onto a cryptocurrency investment) or "decentralized". These shirts are popular among cryptocurrency enthusiasts and investors, and can make a great gift for someone who is interested in this field.