It's incredibly hard to find good looking speaker stands these days. Most store bought stands look like, well, clunky speaker stands that make your home look like a Best Buy display.
We've found that in general, the best designs tend to be DIY. That includes this concrete tripod by Flickr user voxphoto...

A few years ago voxphoto thought, "I'll just make a mold, and cast a heavy concrete tripod, then screw the speakers to that." He made the mold out of melamine-covered particle board. He then poured the sackcrete concrete into the mold, waited for them to harden, and then cracked the mold off. The finished stands are roughly 80 lbs. each, so its unlikely his speakers are going anywhere fast.
photo: voxphoto
More Concrete

Sprout Side Table
looks like they did a number on the hardwood floor.
This is of course a customized - and better looking - version of the old college dorm room method of using Home Depot Concrete Blocks ($1.50) as speaker stands.
I know a lot of people who add sand and buckshot to hollow speaker stands to get rid of any resonance through them. Would these enhance the sound quality the same way?
enhance sound? not really...get rid of resonance that is inherent inside the speaker? probably not...keep outside vibrations from creating resonances? probably...maybe...
you could read up on that here:
diyaudio.com
i personally see more issues with speaker build/quality than with the stand...