Here are some links for things for kids to do in holidays:

http://beafunmum.com/2011/06/100-school-holiday-activity-ideas/
http://www.sciencekids.co.nz/
http://www.kiwifamilies.co.nz/articles/free-colouring-pictures/
http://www.kiwifamilies.co.nz/articles/kids-fun-things-outdoors/
http://www.kiwifamilies.co.nz/articles/rainy-day-activities/
http://www.funbrain.com/
http://www.spatulatta.com/
http://www.crayola.com/lesson-plans/
http://www.nga.gov/content/ngaweb/education/kids.html