YO! 1 More for you... nothing serious.
I will send you an invite to a new Shopify site shortly...
~ have a look on the product pages
~ there is a hidden <section id="related"> with a bunch of products dumped in there
~ We need a carousel with next and previous buttons at each end of a row of 5 products
~ When clicked it moves row one space left or right and shows/hides one product
~ The <li id="this-one"> should be the first visible product
~ related snippet is [url removed, login to view]
I don't care if you use a plugin or write it fresh - up to you!