Ehm, - Mining Monero - Trading goods or services for XMR - Providing freelance work on platforms that pay in Monero - Participating in Monero bounty programs or development efforts - Arbitrage trading between exchanges (cex vs dex) - Staking in Monero lending platforms (very risky) - Running a Monero node and offering services (like VPNs) for XMR payments - Accepting Monero for business transactions (e-commerce, etc.) Probably more ...