To join Arbitrum's next airdrop, qualify by using L2 dApps (Uniswap, Aave), bridging assets, or providing liquidity. Historical airdrops rewarded users with 10–100 ARB per transaction type. Maximize rewards by diversifying activities: swap on multiple DEXs, stake in lending protocols, and interact with niche projects. Avoid centralization: use multiple wallets with unique addresses. Timing matters—airdrops often target early adopters. Monitor Arbitrum's official channels and Etherscan for activity thresholds.