We went into the local Tentworld store where we buy most of our kit, intent on walking out with a set of bunks for Miss 2.5y.o. and eventually Mr 8 wks old..
We walked out with an OzTrail Easy Fold Low rise stretcher for the biggest one, and we'll likely get another one when the little guy gets to the same age.
See in their catalogue here:
http://www.tentworld.com.au/catalogue/22.jpgEach one weights 8kg, and literally takes 10 seconds to fold out, and back up. Comes in a bag.
The bunks weighed a tonne! And took up more space when packed up with all the poles etc that they require.
If you've got the floor space, check out these quick fold stretchers. They're rated to 150kg so good for adults in an emergency. And their end legs point outwards, so the stretcher doesn't rock and move when you're on it like most of the competitors did (e.g. King Goanna stretchers).
Highly recommended.