I'm not diagnosed but I have believed to have been dealing with this for a while now. During my possible hypomanic episodes, I:
-Am more creative and inspired (most of my songs/poems get written during this period)
-Make lots of lists and goals
-Many, many new ideas and it becomes hard for me to work
-Increased quality in everything I do
-Decreased tiredness and need for sleep
-More social, sometimes even feeling a pressure to talk and talk
-Happier in general (although irritability may also be present)
-Increased motivation, doing more things that I normally would, those things being odd (rearranging my closet, cleaning the house for Mom, etc.)
-My thoughts speed up, not extremely fast, but enough to have a bit of trouble grasping and comprehending what they are (as they can be weird or nonsensical.)

Those are the main ones. Sometimes, I can get a little paranoid, but that may be anxiety (which I'm also dealing with.)
I've had a long-term partial delusion (as I call it) but I don't think that's directly related to my hypomania.