With over 2000 attendees last year, Romp & Stomp Fun Day for Children is a day of fun filled activities designed for children aged 0–5. Activities on the day are both fun and educational, and include performances, activities, special appearances and storytelling. The day also provides the opportunity for parents and carers to access information about early childhood services and networks.

Romp & Stomp Fun Day for Children is presented by Melbourne Museum in partnership with a group of not-for-profit organisations interested in early childhood education, including Early Childhood Management Services, Playgroup Victoria, Kindergarten Parents Victoria, Berry Street, Gowrie Victoria, Toy Libraries Victoria, MFB (Metropolitan Fire Brigade), VicRoads and Kidsafe.

Since beginning in 2003, Romp & Stomp Fun Day for Children has proven to be one of the most popular Children's Week events for parents, carers, children and grandparents. It is celebrated on Universal Children's Day, with activities designed to emphasise different aspects of early childhood learning. All activities are included with Museum entry (Children Free, Adults $8) and run from 10am to 3pm, and include:
-Baby Play - Parents and their little ones relax and have fun with toys presented by Playgroup Victoria.
-Active Play - Join Playgroup Victoria for active play with interactive toys.
-Make your own shield - be inspired by the Aboriginal shields on display in Melbourne Museum and make your own shield with Kindergarten Parents Victoria.
-Firefighters are Friends - Dress up and play in official mini Metropolitan Fire Brigade outfits.
-Early learning is fun - create your very own story book using a variety of craft materials.
-Still Life Drawing - Join Gowrie Victoria in learning about the museum objects around you and drawing what you see.
-ECMS Bug Fun, Stories and Craft - make some bug antennae, go magnetic fishing and hear some bug inspired stories with Early Childhood Management Services.
-The Sand Pit - Dig and mess about with some fabulous sand toys presented by Toy Libraries Victoria (Inc).
-Live Exhibits - chat to Melbourne Museum's animal keepers and meet some live animals including lizards, insects and other reptiles.
-Road safety placemats - Learn about road safety and make your own placemat to take home with VicRoads and Kidsafe.