KeepNote is a nice note taking application which supports pasting images into the notes and other neat stuff description from the site: "With KeepNote, you can store your class notes, TODO lists, research notes, journal entries, paper outlines, etc in a simple notebook hierarchy with rich-text formatting, images, and more. Using full-text search, you can retrieve any note for later reference." Reproducible: Always http://rasm.ods.org/keepnote/
sorry for the noise - there's already an ebuild provided on that page for 0.6.1 and working which I have overlooked: http://rasm.ods.org/keepnote/download/keepnote-0.6.1.ebuild