Not that you should plan for it, of course, but it's nice to know that if you did forget about her, an Octopus Mini Lilo can keep your 10-month-old afloat a kilometer out to sea until the coast guard picks her up.
Baby rescued 1km out to sea after parents forgot about her [independent via dt reader nathan]
Octopus Mini Lilo, £4.37 [amazon.co.uk]