To hide 'dummy' bundles from your collections in Shopify, you’ll need to create a new collection to replace the 'All' and then set up some conditions. Follow these steps to get started:

In your Shopify Admin, go to ‘Collections’ (or click here), and click ‘Create collection’.

Enter the following details:

Name: Enter ‘All’ (this will replace the default Shopify ‘All’ collection).

Collection type: Select ‘Automated’.

Conditions

We need to create two conditions.

Condition 1:

Set to ‘Inventory stock is greater than 0’.

Condition 2:

Product type is not equal to hidden

It should look like this:

Click ‘Save’.

All products with an inventory level of 1 or more, and not set as 'hidden', will now appear in this collection.

Now we need to hide the dummy products.

Go to the ‘Products’ section in your Shopify Admin (or click here). Find the dummy product you want to hide, click on it, and under ‘Product Type’, enter ‘hidden’.

The product should now be hidden from the store.

It can take a while for the store to update, a couple of refreshes and it should be hidden.