““When you harvest your land, don’t harvest right up to the edges of your field or gather the gleanings from the harvest. Don’t strip your vineyard bare or go back and pick up the fallen grapes. Leave them for the poor and the foreigner. I am God, your God.”
Leviticus 19:9-10 MSG
https://bible.com/bible/97/lev.19.9-10.MSG

A second harvest can be anything that others can use that we do not need. It’s time to clean out our pantries, clothes closet, garage, and declutter our homes. We are surrounded by things that we do not use. God will bless us and others from our unselfish giving.