I like these for my own little girl to play with but dont have time now to make. With blender and cycles it was easy in a couple hours to have these. The material is just a diffuse glossy mix with some bump from a procedural shader. Use them for arch-viz or wutever.
These chairs are so sweet!
One of my earliest memories is of going into my local library (which had a corrugated iron roof) and seeing dear little stools painted in primary colours - I fell in love with them :-)