Let's take the tube
If you like practical, everyday furniture that still retains an unusual aesthetic, the Paper Tubes Bench by Rewire's Akihiro Otsuka is ideal. As you've probably guessed, the main components are paper tubes, which are wrapped in fabric that's available in 75 colors. One bench has six tubes, allowing for endless color combinations.
To assemble, the bench's wooden legs are bolted together, and the tubes attached by velcro straps. It's easy to unfasten, so you can rotate the tubes (a useful feature if the color fades with time and use), or you can even just replace them with a different color when you feel you need a change. At ¥42,000, the bench can be bought online from Generate Design — a stool version is also available for ¥37,800.