We are taking my ds (23 months) away next month to a house without a cot. I don't have a travel cot and as he is getting quite big now, I don't really want to buy one just for this trip. I think I've seen toddler roll out bed things, with buffers to stop them rolling off, (although can't think where I saw it) but if there is such a thing, where would I buy it and are they any good? TIA