A few 4D Build puzzles are on sale right now at Amazon, including a Hedwig 3D model kit and a Millennium Falcon 3D model kit.

A rapid prototyping platform called VIK (Voxel Invention Kit) enables makers without engineering expertise to create large-scale interactive devices using a series of reconfigurable electromechanical ...

Think you have sharp eyes? Here’s a fun challenge for you! Hidden among a sea of number 5s is a sneaky little number 3—can you spot it? This optical illusion is a real test of your observation skills.