Here are some not so popular niches to take a look at:
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1. Custom pool design and construction
2. Rare book dealing
3. Luxury pet accessories and clothing
4. Medieval armor reproduction
5. Heirloom seed farming
6. Taxidermy
7. High-end audio equipment manufacturing
8. Vintage and collectible toy restoration
9. Gourmet mushroom cultivation
10. Exotic and rare plant nursery.
11. Custom doll-making.
12. Luxury chicken coops.
13. Mechanical keyboard manufacturing.
14. Classic car restoration.
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