I programmed a trail behind the cursor that shows on every page. It gradually changes color, and when you hover over buttons they match the current color of the trail :)))
The client uses collections in the backend of Shopify to control the dropdowns in the shop.
The cart pops out from the left whenever you add something.
There's a blog on the site too...
Shopify's blog CMS is pretty weak. You only get one WYSIWIG text editor. but with a bit of hacking I got it to behave more like a wordpress site, with multiple pictures, slideshows, text blocks, etc XDD