You can create Smart Shopping campaigns to push product bundles where stock hasn’t sold in envisaged quantities. For example, post-Black Friday, you may have a large amount of unsold products within a specific category.
Be sure to add the is_bundle identifier to your product data feed so Google knows which products are to be bundled together. Certain products will sell well within bundles, such as those orientated to a gifting audience.
Impact
Medium
Effort
Medium
Cost
Medium
Want to learn more about this tactic?
Read more about bundling attributes within Google Merchant Center here.