Shopify Bundle Builder Project for Calm Collective

Calm Collective sells a large catalogue of wellness rings and wanted to turn it into a single build-your-own-bundle experience rather than a flat collection page. They already ran a 3 for 2 offer but had no dedicated page that let customers assemble a bundle, see their saving build in real time, and carry that discount cleanly into checkout. The goal was a bundle builder that made a 60+ product range feel simple to shop and got the offer to hold all the way through to purchase.

What We Did We designed and built a native bundle builder on Shopify, structured around a tabbed filter so a large product range stays browsable instead of overwhelming. Products can be previewed with a quick view and added straight into the bundle without leaving the page. The core of the work was the cart logic: each add populates the bundle state, holds the 3 for 2 automatically, and passes the discount into Shopify's native checkout with nothing for the customer to enter. It was built in Liquid and JavaScript with no third party bundling app, so there is no app tax and full control over the interaction. Mobile was treated as a first-class layout, not an afterthought.

Large-Catalogue Architecture: A tabbed filter organises 60+ products into a layout that stays fast and shoppable, solving the real challenge of the brief which was presentation, not product count.

Real-Time Savings: A live "Your Saving £X" readout updates as the bundle builds, giving customers a reason to add the next item and pushing add-to-cart intent.

Discount That Survives Checkout: The 3 for 2 carries automatically into Shopify's native checkout with no manual code, closing the gap where most bundle builders quietly break.

Quick View: Customers preview products in place and keep building without losing their bundle.

Mobile-First Flow: The add-to-bundle and cart interaction were tuned for thumb navigation from the ground up.

The bundle builder launched as a native, app-free experience built to turn a large catalogue into a single high-intent path to purchase. It gives Calm Collective's 3 for 2 offer a proper home and a clean checkout handoff. Live as of launch, with performance data to follow.