Okay, so this collection should really be called Miscellaneous because it contains the rest of the Ugears kits that don't fit in anywhere else. But that isn't exactly an exciting description and this collection contains some of cleverest creations from Ugears. The Collins Dictionary defines gizmo as:
A device or small machine which performs a particular task, usually in a new and efficient way. People often use gizmo to refer to a device or machine when they do not know what it is really called.
So Mechanical Gizmos is an apt title and regardless of whether you remember the correct names of these models or not, we're sure you'll love them as much as we do.