MindMapping Mindomo - create mind maps to embed in your Weebly. Mind42 - a collaborative mind mapping tool. Spiderscribe - another mind map tool.
Web Page add-ons Page Plugins - great for some fancy animations and headings.
Collaborative/Presentation tools Stixy - create a great pinboard to display your work on. Work with friends.
Comic Creators Make Beliefs Comix - create fun comics choosing from a range of characters and backgrounds. Pixton for Fun - create fun comics choosing from a range of characters and backgrounds.
Codeacademy- learn computer programming in step by step lessons. Free Rice - Increase your knowledge