We're organising my daughter's 4th birthday party. The entertainer will come dressed as Elsa and do all the usual party games but along the Frozen theme. My DD will LOVE this! Half of the 15-20 kids attending will be boys. The entertainer has assured me (and I believe her) that the activities are v neutral and there's lots of mention of Olav, etc. but what can I do to widen the theme so the boys won't find the look of things too girly? All ideas about invitations, decorations, party bags, etc. gratefully received. One friend suggested a princess and pirate party but my tired brain couldn't work out how to put that into practice with Queen Elsa showing up!