I try to mix it up, don't like doing my hair the same every day!
Most frequent style is a side pony or side bun. I like a bun high on my head, but only when my hair cooperates.
At night I do a plait to keep it from getting knotted.
I'm a big fan of the extreme side part.
I rarely leave it all down at the moment because its so long and just gets in my way. Half-up is good though
And I have a big headband stash, makes any 'do look instantly more glam!