About ten years ago, I thought it would be a good idea to start a snowglobe collection. My friends thought it was a great idea, too-- every time they passed through an airport, another sparkly, watery creation would wend its way towards me. And then I had over a hundred snowglobes, and a 400 square-foot apartment. That = conundrum.
Walter Martin and Paloma Muñoz are cultivating their own snowglobe madness, by creating little worlds far-removed from the beachscapes and glittery lobster traps that I know.
Let's take a closer look:

O dear, these seem a bit frightful!
Let's get even closer...




...Rosebud...
Rachel,
More like what ARTnews HAD to say about them back in 2006 when they were big at the art fairs. Great idea and well executed.
Now, of course, they will drag it out as long as they can trying to make money off of them by selling them through commercial sites in versions of 250 alongside jewelry for kids, which you link to.
They are currently in the Downtown LA "subway" station lightbox photos of them of poor quality, which make the viewer think, "Why didn't you stop when you got it right and then evolve?"
I'd reather make them myself, using HO model figurines. You can buy snow globe kits for DIY at snowdomes.com