Love all these ideas. Would love an Australian theme for Australia day January 26. With lamingtons, pavalova, vegemite scrolls, lamb and rosemary pies, Sydney opera house cupcakes. Aussie rules guensey framed on wall wattle and bottlebrush flowers, gum leaf wallpaper, swagman waiter.
Also would love a circus theme in a grown up classy way like cirque de soliel. Planet theme with galaxy wallpaper would look awesome.