New folder locked.
Create a folder anywhere and stick all the prototypes in it, then make it Locked.

Inserted into Dock. Drag the aforementioned folder onto the Dock.

Opened.
Drag the appropriate prototype onto any folder; it will copy because the parent folder is locked.

[Dir]..Art, screen captures, icons, photos, 3D, Escape Velocity, Quake, Smaug, etc.

π