Stadlmann went onto to build the world's smallest 3D Printer for, he claims, e1500. Watch on TED here. Perhaps such tiny, affordable printers could "someday make customized hearing aids -- or sculptures smaller than a human hair"?
This technique is not new. The image below shows micro-scale dragon (left) and a movable windmill (right) fabricated by two-photon polymerization in organically modified ceramics. This image appeared in an issue of Photonics Spectra in 2006.