kids rugs are tricky...go too babyish and you'll have to replace them after a few years, but choose something a bit more graphic and they should last a good long while (or at least easily transfer to another room in the house)

dwell hive rug honeycomb wool rug grey yellow white black flooring for kids rooms nursery children's rugs contemporary hexagonal babystylefile baby style file

hive rug, £249, dwell