not strictly for kids (you'll find this in the kitchen section), but i'm game for a bit of repurposing and this trolley would work well as a place to stash the nappies and lotion in the nursery, alternatively wheel it into the playroom and use it to store all your arty crafty bits (or anything else you fancy really)

ikea kitchen trolley baby nursery changing station trolley green blue metal children's playroom storage unit babystylefile baby style file
raskog kitchen trolley, £49, ikea