Hello everybody,
designed a simple spicerack for my kitchen and used a 8mm wood rod. Printed with white PLA, might look better with blakc PLA. Use your fantasy :) To print the other side just mirror it along the x- or y-axis (depends on your orientation) Used a 3,5mm screw, evyrthing up to 5mm will work also.

V1 has a wallthickness of 10mm.

V3 has a wallthickness of 12mm.

I printed the thinner 10mm version and it is very stiff and stable.