Ikea storage boxes for BILLY

Hello, I have the 40 cm deep Billy shelf with wooden doors. Unfortunately, the SAMLA boxes do not really fit optimally there. Since I am probably not the only one with this problem, my question to you is how you solved this issue. Many regards Michael

I had the same problem and simply bought suitable boxes at a 1 Euro shop. They are great and were cheap, so what more could you want? :)