It's not a good idea to give you the project ideas, because we don't know your background and other important detail. Rather, I can give you an idea on how you can get such ideas, where they come from and what to do with that.
Please see my past answer:
Please suggest me some basic C++ project with design patters[
^].
In this answer, you might be interested in the links to my blog entry and several previous answers referenced in a very first item, which is related to the project ideas. However, you may find the question and my other items interesting, too.
—SA