Make the amount of materials you get from harvesting on all destinations equal to dreaming city. Harvesting on the dreaming city grants 7 materials, but on all year one destinations you only get 1-2 per harvest. Im always running low on things like simulation seeds but i have thousands of bayron boughs. This would make me actually want to spend the time running around picking flowers rather than buying them from Spider.
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Or they can make spyder to trade with you X materials for bayron boughs. I have thousands too