We have an Ikea cot mattress which is only 9 months old and which LO sleeps really well on (it's cot size, 120x60, not cotbed size). When we switch her to a toddler bed I'd really like to use the same mattress for a little while longer as I'd hate to see a perfectly good mattress go to the landfill - does anyone know if there are any toddler beds which take cot-size mattresses?