i have a fleece pouch at the very top of my cage, and my dad's old rectangular camera bag at the bottom (it's a long story, lol).

they'll play in and around the pouch, but they always sleep in the camera bag.

my dad always fusses about how the lowe-pro camera bag cost him $100, but now it's a dingy old nest box

in the past, they've made a small cardboard box their nest. they shredded cardboard and stole one of my bracelets and a shoelace to make their bed nice and comfy. i sealed the top of the box shut because i wanted them to sleep in the pouch i spent all that money on, but they chewed a hole through the top of the box and continued to sleep in it! after that, i gave up and let them sleep where they want.

Mine sleep in their pouches, their tipi(solid bottom), under their fleece blankies..

I have one of those chinchilla baths but I use it as a glider kitchen

i don't think pouches themselves are necessary. however, if you don't want to buy a pouch you can go hear and quickly make one without sewing it. http://www.suzsugargliders.com/nosewpouch.htm