Cheap fun activities for school holidays?

[AliBaby]

-beach
-park/ bushwalk (when its not as hot)
-get some paints from the reject shop so the kids can paint
-organise play dates at othe peoples house and return the favour
-cooking cakes or decorating biscuits with icing sugar and sweets

Cant think of anything else at the moment but hope that helps.
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[Nelle]

A scavenger hunt? Even one that requires imagination, with objects 'dinosaur egg' or 'monster hair'.

chalk on the driveway?

cubby-making?