By giving gifts, not to each other, but to Christ. By giving money to benevolence, or the building fund, and making sure God's Kingdom is blessed. Remember God created families first. God blesses families and redeems families. God's promise of salvation is for families.
Holidays are a time for families to remember each other and love each other.
Even Jesus was born to a family. And the Church is God's family. I encourage you this year to change your entire thinking about the Holidays. Instead of competing over the best or most expensive gift, and instead of fussing over where the gathering will be, let's let the love of Christ flow this Holiday Season. No, don't preach to your family, just love them.