First, let me apologize to all the people who love nothing more than curling up in their Rietveld chairs; they apparently only look unsittable. As little Hugo above demonstrates, they are the height of seated comfort.
After mulling it over for a while, Hugo's dad Juan built this awesome half-scale version of Rietveld's Red Blue Chair just in time for his first birthday. A lot of kid-sized versions of classic chairs are 2/3 scale , but half scale turns out to be perfect for a 1-year-old.
Check out the in-progress and completed photos, plus a link to the man with a scan of the plan. Just awesome.