Branded products can complement affiliate marketing niches by reinforcing niche authority and trust. Affiliate marketing niches are specific topic areas—like fitness, tech gadgets, or pet care—where marketers promote products to targeted audiences. By aligning branded products with these niches, affiliates can deepen engagement and increase conversions. Whether it’s a fitness influencer offering custom gym gear or a tech blogger giving away branded USB drives, tangible items boost recognition and affiliate success.