I currently have my 1ft BP in a 39 gal. aquarium and I move her to a ten gal. for feeding. I've read that there's no benefit to doing this, but I got her off of Craigslist and her previous owners moved her to feed her, so I continue doing it just because it's what she's used to.
To get her back into her cage I simply pick up the ten gal. and gently place it inside of her usual tank until she moves out of it and into her hide or wherever she wants to go on her own.