These plate reverbs were simply a gigantic sheet of metal mounted in a box about ten ... [Leo] just made his own plate reverb out of Ikea shelves and some simple electronics.

Ikea is bringing back a colorful, 40-year-old bookshelf that’s designed to be customized. Called the Byakorre, the unit is made of reversible, rearrangeable shelves that are white on one side ...

And never mind that IKEA ... frame. Unless you're as lucky as @laurencewatts8 was in finding an ENETRI frame, you might have ...