Quadbot - Build your own Robot
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
Harry Potter Kano Coding Kit - Build a wand. Learn to code. Make magic.
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
Bitsbox - Monthly code projects for kids
Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.