Still looking for the perfect gift? The TLN Store has all sorts of items featuring our beautiful Echinacea mascot. 
Or if books are more your thing, check out this post about inspirational healing garden books.
Others that we highly recommend include:
Therapeutic Landscapes: An Evidence-Based Approach to Designing Healing Gardens and Restorative Outdoor Spaces, by Clare Cooper Marcus and Naomi Sachs
Designing Outdoor Spaces for People with Dementia,
by Annie Pollock and Mary Marshall
Therapeutic Landscapes: A History of English Hospital Gardens Since 1800,
by Clare Hickman
Gardening for Seniors, by Patty Cassidy
Happy Holidays!