Here's a mix of different items I thought of:
Goggles, like what one would use for skiiing, worn on top of your face.
A second style could have the goggles glow. Are glowing items possible?

Bionic scope attachment, imagine like the rifle scope built into the right half of your face.
TELESCOPIC EYE MUST GLOW IF POSSIBLE.

Also have a "lefty" style so it can be worn with the bionic monocle at the same time.
Alternate face armor to make your face look like that of an onslaught grunt. Might look interesting when worn with other face items.
Spiky bits. Spiky shoulder pads, spiky head armor, spiky knee pads, elbow pads, gloves/hand armor, etc. Everything is better with spiky bits.
http://tvtropes.org/pmwiki/pmwiki.php/M ... OfVillainyArmor plating with a more "heavy" and "bulky" appearance to it. It should appear worn, as though it's seen a lot of wear and tear without being replaced.
Football helmet, shoulder pads, and jersey. Jersey is team-colored if possible.

Hairstyles made out of metal: mohawk, afro, spikes, other "goofy" hairstyles.

Some items wouldn't make sense if they fell off when you died. Maybe make it a variable attached to the item,
0 for stuck to character, 1 for falls off on death. I know that a shirt flying off you on death wouldn't make too much sense... but knocking someone's socks off would be hilarious.