2004 Stardust successfully collected comet samples and cosmic dust. Try playing Comet Catch, or glue glow-in-the-dark glitter and stars to black paper.
Haiti Ancestors’ Day (see 22 May)
Berchtold’s Day (Switzerland and Germany, perhaps to do with Perchta, Woden’s wife) – so play some nut games.
Epiphany Carnivals start in St Kitts and Nevis (Carribean), Colombia and Cape Town. These last two have strange minstrel themes that seem racist to Westerners.
Ninth Day of Christmas (9 ladies dancing – so make a dance show to torture daddy or visiting relatives)
National Science Fiction Day – to celebrate Isaac Asimov’s birthday (b. 1920) – have you read any of these?