What would you do?
Birthday child (9) has SN meaning organised games are out. Need to aim for max. 7 year old level. Likes science so was thinking about just letting them play. Then, when that gets too fractious, doing a couple of simple experiments i.e something that they can do themselves without making too much mess. Will be winter so I have to plan for indoors.
Science related party bag, or experiment they've made that they can take home.