Hover Zoom - Enlarge thumbnails on mouse over.
HiddenMe - Hide desktop icons with a single click.
Imagus - The extension is intended to complement image features that (I think) is missing from Opera by...
Liist.cc - A tool that turns your photos, notes, and maps into shareable recommendations - fully automated.
Image Max URL - Help find larger or original versions of images, including a customizable image popup feature
Alternative Hunt - Learn about great alternative products as you browse the web