The "Stacking Throne" was a one-off, privately commissioned piece designed by Laurens van Wieringen, but I really love the idea of a modular chair that can grow with your child or even be used as a toy of sorts. This version is made from foam with a sturdy wood and steel base. I'm still trying to figure out exactly how everything stays together (especially when used as a high chair), otherwise it seems like a pretty great idea. Thoughts?