Reward your customers with physical or digital gifts (even promo items) that will make them feel like they are treated like royalty. The more you pamper them, the more they will want to buy from you.
Our easiest to use Shopify addon to date, just tag the products you want connected and voila! Would you like to make this even cooler and add multiple products with different, more complex rules? Let us know, we can make it do pretty much anything that you can imagine.