All Materials can be acquired by simply playing the game as normal - watering and harvesting plants, leveling up, and completing quests. You can also find specific items to purchase on Floyd's List or even your friend's Dispensaries! :)
Here's a great tip - once you've got your Bus Stop unlocked, keep an eye out for a scruffy-looking guy named Zeke. He'll trade buds and products for MATERIALS!
I hope this information has been helpful!
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