Conceal a Greatsword (with magic items)

[Yogibear41]

Looking to bring a new character into a d20 modern game(think dnd 3.0/3.5 in a modern day world) that uses a greatsword, looking for an easy magic item or enchantment that would allow me to conceal it as say a dagger or knife.

Basically want to be able to walk around in a town with my big sword without people looking at me like I'm crazy.  We are based out of a town in Idaho in the year 1995, but we regularly jump back in time and to other worlds so the setting is essentially different every adventure, so just looking for ways to blend in better.

[Nanshork]

Possible options:

Hideaway Weapon Enhancement

Morphing Weapon Enhancement

[Nanashi]

What level are you? Secret Pocket spell (Level 3 Mage+Acolyte) does this.

[Yogibear41]

I actually found a d20 modern version of something similar to Morphing that lets me change it into an object of a similar size so I can use it to disguise it as something like a brief case, or an umbrella, or something along those lines.  Thanks though