It sounds like you need some inspiration and ideas. One of the best things I would recommend doing is, like you said, try the task of the month/year that go on throughout the year. They provide excellent goals and the TotY (task of the year) can be quite challenging, requiring several attempts to get one part sometimes. You could also read through some dream journals or the dream gallery section of the forum, where people post their best and most interesting dreams. There's some things you may never have thought of. One last place in a thread called "1000 things to do in a lucid dream" which can be found here. People have listed off well over 1000 things to do, up over 4000, though some are probably duplicates. If all else fails, there's always sex

Oh, and welcome to the forum!!