Left: useless because it’s ugly as hell and won’t fit in anywhere. Right: useless because it falls apart if you sneeze at it.
Actually, the right looks like a Kallax, which are probably the sturdiest item in their catalogue given the walls are like 3cm (1.2 in) thick. I’ve taken them apart and reassembled them before, and unlike every other piece of Ikea furniture I’ve done that to, they’re actually just as stable and reliable as before.