Cot that goes on top of a bed?!?

[mymissus]

I have a dilemma! I have a 22 month old and a 3 month old. The older boy is still sleeping in his cot and happy there and I would like him to stay there for the moment as there have been a lot of changes for him recently (house move, new baby, nursery etc) and he is not ready to move up to a single bed yet. I am therefore looking for something for the not so little 3 month old girl to sleep in that fits on top of the single bed that we have in our tiny third bedroom. It is a built in bed so really sturdy and we can't take it out as we want the toddler to eventually go in there. She is nearly out of her moses basket (which is a large one!) and I am really looking for a cot that sits on top of a bed as I would like her to sleep on a proper babies mattress? PLEASE any ideas are welcome as I have done loads of research and come up with nothing, and feel like I am running out of time....!!

[MayfairMummy]

When my DS was 3m.o., we travelled to Antigua and I took along a samsonite travel cot (not the bubble cot but what some sites call the delux (sic) cot). I put this on top of either the bed or a long cushion that came from our outdoor chairs, and my little one used it happily for a month.