Mike presents two strategies to increase listing inventory: speaking with two for-sale-by-owners (FSBO) daily and engaging with one expired listing daily. Both strategies involve minimal time investment and no financial outlay, as resources are provided through a Facebook group. Mike calculates potential earnings, suggesting that even a modest 2-3% conversion rate could yield significant income. They emphasize the importance of honesty and follow-up in these interactions. The strategies aim to demonstrate the potential for substantial income with minimal effort, encouraging participants to apply these tactics.