I have periods of elated hymania and periods of irritable hypomania. Sometimes the mood stays hypo and falls into depression. Other times, it pushes into full-blown mania of either euphoric or dysphoric type.

Euphoric hypo: More sexual fantasies that sometimes play out into certain behaviors, sometimes increased alcohol or benzo use to bring me a "notch down," since I get so keyed up, regardless of whichever type of hypomania it is. I will get more confident. Not even necessarily in a social way, although that can be true. More so in a way, where I think I'm using good judgment, but I'm not, such as impulsive buying.
I will stay up most the night, even when there is work the next day and get completely consumed by a certain activity that I find especially enjoyable or projects that I feel motivated to take part in. I might even start researching a certain subject of interest to the point of obsession, increased creativity, feeling I have some kind of special "purpose," at times. Generally feeling wound up.

The irritability type of hypomania for me can be mixed with a lot of the behaviors above. It's just that in addition to these, I will be more prone to intense anger over things and overractions, anxiety (crossing into paranoid territory when borderline manic), I'll just get up and go somewhere at odd times and get strange ideas in my head, as if the world depends on my plans, wired rather than tired. These symptoms just intensify when manic.