Here are some of IKEA's bestselling KALLAX accessories ... or you can install the shelf vertically to make a divider for books or records. The KALLAX Insert with four shelves is $25 and creates ...

[leftthegan] found an IKEA Kallax 4×4 shelving unit for a fair price, and after a few design iterations — some due to the aforementioned regulations — it was modified by adding a shelf ...