The museum is made for crazy blustery days. It was blowing a gale outside (quite literally, I think, with winds of up to 100k/hr) so we went dinosaur hunting in Melbourne Museum's exhibits.
The Melbourne Museum has a great children's gallery where the little kids can blow off steam after time spent not being able to touch anything. It has an indigenous puppet theatre, a Mesopotamian market and a Roman construction suit complete with dress-up togas. It's got the usual nature displays with buttons to press and sounds to listen to and videos to watch. It's got things to climb on and things to loll over. It's got weird mirrors and a mirrored triangular prism you can sit inside.
The museum also had cake... okay it was banana bread, but that counts as cake when you're 19 months old and you're stuffing it all in your mouth before you really take a good look at it.