There are several cryptocurrencies that can be used to buy items online, including:

Bitcoin (BTC): Bitcoin is the most popular and widely used cryptocurrency. Many online retailers and merchants accept Bitcoin payments.

Ethereum (ETH): Ethereum is another popular cryptocurrency that can be used for online purchases. It’s also used to power smart contracts and decentralized applications.

Litecoin (LTC): Litecoin is a faster and cheaper alternative to Bitcoin, and it’s also widely accepted for online purchases.

Bitcoin Cash (BCH): Bitcoin Cash is a fork of Bitcoin, and it’s designed to facilitate faster and cheaper transactions. Many online merchants accept Bitcoin Cash payments.

Binance Coin (BNB): Binance Coin is the cryptocurrency of the Binance exchange, but it can also be used for online purchases on select merchants.

These are just a few examples, but there are many other cryptocurrencies that are accepted for online purchases by various merchants. It’s always important to check if a specific merchant accepts the cryptocurrency you’re interested in using before making a purchase.