Gnome Terrarium

Oh, and I almost forgot, CB2 offers a Gnome Terrarium (on clearance, no less). As they say in their writeup (notice that they say that the accessories will vary; as with anything Gnomish, capriciousness is a given):

Enchanted garden. Grow green with a mini folkloric friend. Easy-to-use kit comes with everything you need to create a tiny terrarium, including a mason jar with daisy cutout lid for aeration, soil, moss, colored rocks, fabric flower—and most importantly, a trusty gnome and tiny accessory to tend the garden. Gnome-sized accessories will vary, but could include a wee wheelbarrow, watering pail or pick axe. Just add the plant of your choice.

"Trusty Gnome" -- those are two words that should never be paired, if you ask me. If it weren't for the sake of the plant you'd put inside, I'd suggest not using the daisy cutout lid for aeration, and consider it a Gnome Disposal Jar, but that's just me.

On the other hand, it's useful as a Gnome Containment Unit, if you want to be sure the Gnome cannot effectively escape its wee prison.