Looking for non-magical improvements to items

[RealMarkP]

I'm going to be running a low-magic campaign setting and I'm looking for ways to beef up mundane items. I found a neat list here (http://www.dandwiki.com/wiki/Improved_Masterwork_(3.5e_Feat)) that grants mundane bonuses to masterwork weapons and armor. What I'm looking for is a way to add to this list. Has anyone homebrewed anything like this?

[Xaotiq1]

War of the Lance. Master base class. Craft focus. I will suggest increasing the cost by at least x3. Still 3rd party; but better than most stuff on the site you linked.

[Jormengand]

PF has Mundane armour modifications if that works. (http://www.d20pfsrd.com/equipment---final/armor#TOC-Mundane-Armor-Modifications)

[TuggyNE]

Seerow's stuff on this is pretty cool.