Hanging Glass Orb Terrariums?

[RandomGemini]

I'm not sure where to put this because it's not directly orchid related, but the other day I was at a local nursery and saw several of these things and thought they were just beautiful. They are miniature terrariums the size of Christmas ornaments with a tiny live plant inside.

I wondered if anyone here had tried to keep one and if they'd had success with them.

I'm planning out my window garden for my office and thought one or two of these would be interesting to add to the garden. It would be even cooler if I could grow an orchid in one, but somehow, I get the feeling that this would not work out, because these orbs are tiny and even the smallest mini orchids I've seen would outgrow one of these things in a year. Still, having something that isn't an orchid inside a little terrarium like this would be interesting!

I just don't want to get sucked into a gimmicky fad that I can't maintain long term. I'd like this to be a plant I could keep alive and happy inside the container.

Thanks for the info!