Selling products exclusively through bundles
Follow the steps below if you want to make products available only through a bundle.
After you have added an "active" product in Shopify to a bundle in the Simple Bundles app, go to the product settings page in Shopify, by clicking on the product link under Products.
Click on the Manage button under Sales Channels and Apps.
Uncheck the Online store from the list, and your product should no longer be available through your online store. This may take a few minutes for it to be removed from your storefront collections and search results.