mass of large exercises?

[metulburr]

I have done some of these
http://www.cplusplus.com/forum/articles/12974/

but i like the Graduation one, the complexity and humor of it as an exercise. Are there any ideas more like this one as exercises?

I fail to get an idea of my own exercises, thus i was hoping for ideas to touch on as many aspects of c++ as it can.

[LowestOne]

I made an XML parser that I thought rather nifty, though it didn't really use c++ 11