Pen ideas

Hi everyone, can you let me know which are really good pens for indoor use that fold flat. My little Pixie had to have a dental recently and ended up staying in our kitchen for the night as she was too poorly to go outside to her cosy hutch. We made a run for her with the run attachment from her hutch so did work well but took a lot of working out and ages to put up. I'm now thinking of having a type fold up pen indoors so in an emergency I can quickly pop it up with no problems. I'd be grateful for any ideas or suggestions if you have any

Pixie recovered really well and is now back to 'stuffing' her food as normal. bless her

I have a couple of these:
http://www.zooplus.com/shop/rodents/cages/pens_fencing/pens_with_racks/126789
http://www.zooplus.co.uk/shop/small_pets/hutches_cages/runs_fencing/pens_with_racks/95235
(The largest one is only available if you order in euros)

They fold up quite nicely, although not completely flat, it's more like a box shape because the panels are quite thick! Anyway once folded up they easily went through the hatch into my loft

These are perfect, many thanks