Blackhole is a promising project supported by Avalanche. A few days ago, they launched a testnet! We can participate in it to qualify for a potential airdrop from the project.
Go to the website, connect your wallet, and switch the network to Avalanche Fuji (Metamask will suggest switching the network automatically):

Request $BLACK test tokens from the Discord faucet (or from this faucet, if it works): 2.

Request $AVAX test tokens from the faucet.

Return to the testnet website and start making swaps (to make a transaction, click Allow BLACK):

Add liquidity to one of the pools:

Then open the Lock tab, click Create Lock, and lock some tokens: After this action, you will receive votes that can be used in the Vote tab.

Participate in voting:

Open the Genesis Pool tab, click Deposit Liquidity, and receive LP tokens in return, which will generate passive income:

Repeat these steps periodically to increase activity on the test network. Add liquidity to different pools and swap different tokens.
If you find any bugs, report them to the #support channel in Discord.
Participating in airdrops is your choice and your risk. We don't guarantee any rewards. Connect your wallet only to official websites. If someone asks you to send crypto – it's a scam.