Has anyone heard of Life Nest? It's a type of mattress designed to prevent 'flat head' and cot death
www.amazon.co.uk/gp/aw/d/B008K10DJY?pc_redir=1399838090&robot_redir=1
I think there may be other similar products on the market.
I like the idea, but concerned it's not common knowledge if it actually works...