I set up a mini studio in the hallway, featuring a plank of styrofoam, two remote flashes, and a couple of plastic bits I found lying around to create some mini softboxes.
Check it out:
There's a stiff piece of translucent plastic foam on the left, in front of the SB-800, and a soft padded bag attached to the SB-28 on the right. When the lights fire, both plastic baffles light up as if their entire surface is emitting light, creating a very appealing glow without the harsh specular highlighting you normally get from a flash.
Here's a couple of pics showing the result: