The best thing about the time just before immigration, is all the parties and attention just for your family.
Depending on the situation you can make this a big event or small but either way, it is important to say goodbey to all loved onces. In a couple of weeks you’ll be far away from all of them, so it’s important to open up and say the things that you can best say in person instead of via the webcam.
When organising the farewell party yourself, it’s not hard to pick a theme! 
And there are loads of (online) shops to help you with the decoration. Think about the food, famous people, music, sporters, animals and events that happened to cheer up the place. Does you local movie rental place have any Nicole Kidman posters? Can you get you’re hands on Tim Tam cookies? Aussie flags should also be do-able?
In the reviews section, there are many “Cultural” shops which can help you light up the place.
