Korean artist/designer Oneseo Choi must have a steady supply of castoff aluminum extrusions. His "Pattern of Industry" series uses them to make furniture:

Because Choi is branded both an artist and designer, it's a little trickier to evaluate the work. If it's art, it's essentially beyond reproach from this blog. If it's design, from a cost perspective the material choice doesn't make sense, unless the extrusions are surplus (or unless it targets the luxury market, where nothing is meant to make sense).

In any case, the series has proved to be wildly popular. As seen below, Choi has won over a half-dozen commissions to populate coffee shops, department stores, offices, corporate lobbies, model houses for real estate developers, and even Adidas' flagship store in Seoul with pieces from the series.