Airdrop & Faucets
A crypto airdrop is a way of distributing new coins or tokens to existing cryptocurrency holders or users who perform certain tasks. It is a marketing strategy used by blockchain startups to raise awareness and adoption of their projects. Examples of airdrop are Jupiter, Avive, Ice and Arbitrium. This includes community building and user acquisition while a crypto faucet can be an app or a website that distributes small amounts of cryptocurrencies as a reward for completing easy tasks. They're given the name “faucets'' because the rewards are small, just like small drops of water dripping from a leaky faucet.
Testnets
A testnet is an identical copy of a blockchain network that is created for the sole purpose of testing out new products and features. It operates as a development hotbed where developers can try out new functionalities before integrating them into the main blockchain network – termed the mainnet. The usual rewards for a testnet user is the token of the network.
Free NFTs
Free-to-mint NFTs are a type of non-fungible token that allows creators to mint and publish their unique digital assets on the blockchain with no upfront costs. The benefits of free NFTs extend beyond just cost savings for creators. Other NFT collections offer free NFT minting to promote such collection so that the community will be rewarded of an NFT during a certain period or campaign.
Game Testers and Scholarships
A game tester makes sure a video game is user-friendly and bug-free before it's released. Some blockchain-based games reward players with cryptocurrency for their in-game achievements or participation. Explore blockchain gaming platforms to find opportunities to earn crypto while playing. Scholarships on the other hand is a way for several people to organize and share in the earnings from a game. For example a guild could get members to play for a popular game and share for the earnings of what the player will get from the game. The most popular sharing is 50-50 but that would always depend on the arrangements between the guild and its players. Example of scholarship is playing for Axie Infinity and Pixels.
Blogging
Blogging is the same as the normal blog posting and creating articles but this one only has a difference since your article is posted on the blockchain. Example popular blockchain blogging platforms are PeakD and BuildSpace
Mining
More commonly know as crypto mining. This could be done by using your computers or nowadays cellphone. Recently popular mining apps on the phone are Pi Mining, Notcoin on your mobile device and Bitcoin for huge facilities and companies.
Bounty & Affiliate Programs
Many blockchain projects offer bounty programs to reward individuals for tasks such as marketing, content creation, bug reporting, and community engagement/building. Participants can earn tokens in exchange for their contributions.
Giveaways
a promotional event in the cryptocurrency space where individuals or organizations distribute cryptocurrency tokens or coins for free to participants. Typically, these giveaways are used to promote a particular cryptocurrency project, exchange, or to increase brand awareness. Examples of this are mostly posted on a projects social media page such as Twitter/X.