zippedsiren
Possibly activities (they can be like 'we can totally do this' and do badly):
pottery wheel (seems classy, very messy), kite making/flying (why they would do this in the winter, I don't know), figure skating, skiing, dunking basketballs, synchonized swimming, cooking something (ramen?). Figure skating is potentially the funniest with falling down a lot.
FIGURE SKATING YES, THANK YOU. LET'S DO THAT. <3