How to gain SLP?

How can one effectively acquire SLP tokens? Are there specific strategies or methods that have proven to be successful in accumulating these tokens? Is it primarily through playing Axie Infinity, or are there alternative routes such as trading or participating in liquidity pools? I'm particularly interested in understanding the most efficient and cost-effective ways to grow my SLP holdings, so I can maximize my potential returns and take advantage of the opportunities presented by this exciting cryptocurrency.