http://www.blockposters.com/
Make a giant poster from an image 8.5 X 11 for free. Upload images, decide how many pages, it creates a .pdf that you can print.

http://springfieldlibrary.wikispaces.com/CombinedSearchPosters
Loads of digital poster makers. Shows Glogster posters in classroom.
http://edu.glogster.com/glogpedia/ More Glogster posters

http://teacherlibrarian.ning.com/
Teacher Librarian Ning

http://visuwords.com
Visual thesaurus similar to The Visual Thesaurus (subscription of 19.95 a year)

http://prezi.com/t1n1usphz6fw/solar-system-prezi-tation/
A teacher's Prezi-tation about a solar system assignment

http://www.boxoftricks.net/
A great site with lots of resources for teachers.

http://museumbox.e2bn.org/
This site allows you to create a virtual museum box.

http://quizlet.com/
Quizlet lets you make online flash cards.

http://www.newtools.org/showtxt.php?docid=737
Learning event generator -- place your topic in one box and spin the wheel to choose a random way to express that topic and build a lesson.

http://www.slideshare.net/
Slideshare -- share your Powerpoints over the web.

http://www.ujam.com/
Make music even if you don't have the voice you want.

http://schoolcenter.gcsnc.com/education/components/docmgr/default.php?sectiondetailid=78926&fileitem=72328&catfilter=ALL
Projector to screen to use laptop while viewing instructional dvd short clips to stimulate discussion and analysis and synthesis without breaking copyright laws.