These lists are not exhaustive--small drops in the ocean of good-reads; a few treasures we have loved along the way. I'll keep updating this list as I make my way through my "to be read or reread" stacks.
Marriage
This Momentary Marriage, John Piper
When Sinners Say I Do, Dave Harvey
Love & Respect, Emerson Eggerichs
Spiritual Disciplines & Theology
Desiring God, John Piper
Discipline: The Glad Surrender, Elisabeth Elliot
The Knowledge of the Holy, AW Tozer
The Holiness of God, RC Sproul
Knowing God, JI Packer
Raising Children
Gospel-Centered Parenting, CJ Mahaney (free audio)
Give them Grace, Elyse Fitzpatrick
Shepherding a Child's Heart, Ted Tripp
The Mission of Motherhood, Sally Clarkson
The Shaping of a Christian Family, Elisabeth Elliot
Children's Discipleship / Devotionals
The Jesus Storybook Bible
The Gospel Story Bible
Long Story Short
ABC Bible Verses
Home / Household / Miscellaneous
The Hidden Art of Homemaking, Edith Schaeffer
the Naturally Clean Home, Karyn Siegal-Maier
The Complete Book of Essential Oils & Aromatherapy, Valerie Ann Worwood
ABC Herbal, Steven Horne
Nourishing Traditions, Sally Fallon
Solar Gardening. Gretchen Vogel Poisson
Bulk Herb Store (articles, books, storefront)