My son loves trains and train tracks. These models are based on the fantastic model that KDima added on Thingiverse. Because they interlock. they have worked much better than the supports that the Ikea set came with.
My son (age 2) had about 12 of the base pillar height printed and was making some really cool designs. Inevitably we went a little furth and made double height pillars. Most recently at my wife's request we have a double decker model, kind of like a high and low shared intersection.
They pair great with split track and intersection pieces for high up different paths. It only takes a few extra pillars and some imagination.
Hope you love them as much as we do. Thanks again KDima!