4. Bonsai Plants
Collecting and tending to bonsai trees is becoming a widespread hobby, and a costly one at that. As the size and shape of each bonsai is different, ranging from finger-length plants to 18-inch maple trees, so do the prices. However, all bonsai’s are pricey and considering you initial investment of a few hundred dollars for seeds and supplies, the effort is definitely worth it. The miniature shape also allows you to grow several of the trees in a confined space.