Homeschool Curriculum Add-Ons

Homeschool curriculum guides, sold by theme — Kindness Mail, Family Connection, Mail Around the World, and Time Capsule — pairing with the Little Letter Box. Each guide includes lessons for every grade level (K–1, 2–3, 4–5, and 6th+), so families with kids at different grades can use the same pack together. Coming August 2026.