I'd say have an egg fight but that would probably get the kids suspended for assult with deadly weapon and you in trouble for egging them on.
LOL! There's an old Woody Allen joke that the Easter Bunny fears meeting Jewish kids with slingshots....
Seriously, the 'Easter Bunny' and 'Santa Claus' are INSIDIOUS anti-Christian propaganda....American businesses by and large have bought into it wholesale--to sell retail. We can insist they honor our beliefs and if they don't do so with their advertising, we can shop at places that DO. And we should and MUST.