American Soil and Stone
Sites in the San Fransico Bay Area sell soil, stone, and garden accents such as live bamboo and stone fountains and relics from around the world. They offer grants to schools beginning in each calendar year.
Army Surplus Stores
Army surplus stores offer a wide variety of sturdy clothing and gear that can help with your day-to-day adventures. Follow the link to find a search site that can help you find one near you.
Open Houses in the San Francisco Bay Area distribute biological lab supplies to schools. Sign-up is required and they love having volunteers help out, too.
Good nature Publishing
Stunningly beautiful field guide posters and notebooks printed in an environmentally sustainable way.
Planters that hold water so you can plant on your porch, patio, or sunny room and go on vacation.
Educational Innovations, Inc.
Cool and fun but real supplies for science classrooms and gifts. Pages contain the science behind each item with links to curriculum ideas by age group and more about what you can do on blog links.
Gardener's Supply Company
Useful and unique garden supplies for home, school, indoor spaces, and gifts. Includes raised up raised beds for accessibility.
Online seeds, supplies, how-to videos, and a variety of guides to help you live and garden well. Their physical store is Peaceful Valley Farm and Garden Supply in Grass Valley, California; it's pretty neat, too!
I can attest to the sturdiness of Kamik's rain boots for children, along with their cool colors and grippy soles for climbing in wet weather. They also offer children's rain gear and boots for adults.
Narain's Outdoor Repair
Located in Berkeley, California, this If rain and/or camping gear and backpacks are in need of repair. You can also create your own gear, too, with all the supplies they sell or perhaps buy one of their own designed or custom crafted pieces.
Supplies for water catchment. Get exactly what you desire from this website; the cost of shipping is high but you will get what you need.
String and twine dispensing is often difficult for young hands to handle. This tool looks like the perfect fit to allow more independence and less waste.
SCRAP offers free and low cost materials that have been diverted from the landfill for artists and classrooms.
Sketch for Schools
Pre-made blank or customizable books for nature journaling. Quality that any school can afford.
Territorial Seed Company
Seeds, garden supplies, and growing guides.
The Urban Farmer Store
With three locations throughout the San Francisco Bay Area, California, the Urban Farmer Store supplies and classes for water catchment, drip and traditional irrigation systems, and lighting. Their website offers guides and instructional videos as well.