www.picturetrail.com - You can create a slideshow of photos to easily embed into your blog. Makes an effective slideshow easily, with lots of different effects and themes.
http://www.divshare.com/ - This site will host all of your photos, videos and audio. When uploaded you get an embed code to put into your blog. Easy to use and allows many log ins at the same time. I recommend a class account, then all students can access the material at the...
http://www.symbaloo.com/ - Create an symbaloo then get the code to embed into your blog. You will never need to retype all of those bookmarks, when you create a new blog. Easy to share symbaloos with friends and teams.