Organizing a man's closet is still a relatively new concept for me as I got married a few years ago. So I haven't really made any earth-shattering discoveries, but here's what I've got so far. This side of the closet is also color coordinated, but isn't noticeable since...it's pretty much all the same color! Got to work with what you have :)
To organize the ties, I got this tie spinner. It can hold up to 16 ties and looks very neat in the corner of the closet.
Belts can be hung on this hanger to save space and stay organized:
Baskets are of course necessary to avoid mayhem in the closet. I got two - one holds my husband's traditional hats and the other holds his socks.
Weird tip of the day: I found stacking new, unopened shirts in alternating directions helps prevent it from slipping and sliding onto the floor. It might look strange, but it sure is convenient!
Let me know if you have any ideas for mens closets...I'm still learning! :)