I've done this before:Put your clothes into a black plastic trash bag.Put a vacuum-cleaner nozzle into the bag and hold it air-tight.Turn on the vacuum to suck all the air out of the bag. By removing all the air from inside the fibers of your clothes, the bag will quickly shrink to about 1/4 it's original size.Quickly duct-tape the bag of clothes, or it will re-inflate when you turn off the vacuum. The duct-tape keeps everything small and tight.
I went to Edinburgh a few months ago, and the walking-tour guide explained it: There USED to be unicorns, but they didn't want to get into the ark. Noah threatened them, but they were too stubborn and didn't want to listen to authority. Noah warned them that big rain was coming, but they weren't afraid of it. They went extinct during the flood. Centuries later, Scotland chose the unicorn as its symbol because it's the animal that most represents the attitude of Scottish people: stubborn, resistant to authority, and accustomed to being rained on every day.
I never heard of this type of store. I just googled it, and found there's one that opened in my town over a year ago. Tired of being one of Amazon's highest sources of income, I'm going to check out that store soon.
I honestly thought McDonalds has been doing this for years. They've already proven in court that their shakes contain zero dairy products (which is why they have to call them 'shakes' instead of 'milkshakes') and are based on a synthetic plastic-like product.