Hey Janelle
Don't know steady Liam is on his feet but most of these things he could do even if crawling.
How bout Obstacle courses - chairs to run or skip around, tables to crawl under, hoola hoops to jump in and out of, tape on the floor to walk on etc
Toss rolled up socks into a bucket or washing basket
Musical statues - Liam prob wont get it but will love some silly dancing
Walking like an animal, how does a dog,cat, elephant, etc walk
Cubby houses or pillow piles to crawl/roll on etc.
Blowing and popping bubbles
Umm or one of the play centres like Riverton - leisureplex, Jungle Gym, Tropical Twist in O'conner, Also I think there is a new one in Gosnells. Quite often these are my saviours
Today you may even get a couple of mins outside as I can see only a few clouds
Ok I have more somewhere but my kids are close to killing each other
Goodluck - soon we should meet up at one of the kids playgrounds and we can have a chat while they run around like crazy monkeys !