I've found a few different Shopify apps that allow me to create product bundles but I'm looking for something that will work with the Storefront API so that product bundles will be returned like regular products. Anyone know if anything like that exists?
It's not a great solution but I was able to do this by using Shopify Collections. You can add a number of products to a Collection and query that collection from the Storefront API and then build the bundles yourself.
Interesting... Did you have to create those collections in the Shopify Admin first?