Playground/ nice thing to do with toddlers near North End Road

[Alva]

Have to head up there for an appointment but would like to do something fun with the kids (oldest 2.5) for a bit while around there - any ideas? A sweet little playground in the area will do - we'll save the big museums/parks for another day! Thanks

Nearest I know about is the Fulham Palace Gardens and nearby playground - huge, well equipped and in the Summer months has a sandpit and paddling pools.