Pixie glades... Hmm...
I would picture somewhere light, airy, lots of old, solid trees with sunlight beaming through the leaves creating that dappled look on rich emerald green grass. Flowers, there have to be flowers, particularly ones that attract hummingbirds, scattered all about. Large bushes around the perimeter, both for appearance and to keep the pixies safe. Small creek running through one corner with rocks scattered through - the pixies, or pixie here, need somewhere to sit as they are hanging out in the creek. On that same topic, some natural stones arranged for seating, or maybe mossy tree trunks, though I like the look of stone better I believe. Hmm. I'll keep working on the picture in my head.