3d pen

Surprisingly with the 3D super virtual magic brush
Lix, from London, England, has introduced a unique 3D brush. This 3D pen allows you to write and draw in the air by melting, then freezing the print.
The world's first 3D brush
A US toy manufacturing company has created a pen that can draw objects using 3D print technology, according to a news release from Mashable (US) on Feb. 21.