The most effective promotional products depend on various factors such as your target audience, the goals of your promotion, and the message you want to convey. However, some promotional products tend to be more effective than others in terms of brand recall and customer engagement. Here are some of the most effective promotional products:

1. Branded apparel: Branded clothing such as t-shirts, hats, and jackets are popular promotional products as they are functional, wearable, and act as a walking billboard for your brand.
2. Writing instruments: Pens and pencils are low-cost and practical items that can be used daily, increasing the likelihood of brand recall.
3. Tech accessories: Phone cases, charging cables, and other tech accessories are popular promotional products, especially with younger demographics who are tech-savvy.
4. Drinkware: Promotional mugs, tumblers, and water bottles are popular as they are functional and can be used daily.
5. Tote bags: Tote bags are versatile and eco-friendly promotional products that can be used at trade shows, conferences, or for everyday use.
6. Desk accessories: Desk accessories like notebooks, mousepads, and calendars are practical items that people use frequently, increasing the likelihood of brand recall.
7. Health and wellness items: Branded stress balls, exercise equipment, and other health and wellness items are effective in promoting your brand as they show that you care about your customers’ well-being.

It’s important to choose a promotional product that aligns with your brand, appeals to your target audience, and serves a practical purpose. Additionally, make sure to customize the product with your brand name, logo, or tagline to increase brand recall.