I second Craigslist. We had one shipped from the east coast to the Midwest from a private party who had a new, never installed sink. A caution though if you go this route. Kohler won't honor the warranty if you don't buy from a real dealer.

Do you mean the actual storage boxes or the cubes? The boxes are available at places like the Container Store or Storables and often at office supply stores and places like Home Goods, but with less of a selection. Cube storage systems are available just about anywhere!!

Sigh...another partial floor renovation with a man-made product. I'm sorry you have to learn this the hard way. Man-made products like laminate, vinyl, engineered hardwood, factory finished hardwood, etc have a shelf-life of (roughly) 24 months. Once they have had their day, they disappear forever. The big manufacturers need to stay on trend so that customers can find what they want RIGHT NOW! If the manufacturers let their lines go stale they lose out on millions of dollars worth of sales each month. It's how they renew themselves when they sell products that can 'live' for 25 years. So what to do? Not much. You will either move to something completely different, or start over. If it has been more than 2 years since you installed your floor, you will be hard pressed to find enough of the product to satisfy a medium sized renovation (200sf) let alone 'the rest of the house'. Please show us pics. There may be some on Houzz who can find you a decent look alike.

I've tried to find them--when I search I get design firms that have access to their products--its a TO THE TRADE-hence my reaching out to Houzz people. This is an English or Australian manufacturer (from what I could find) so not easy to contact.