woot stickers.
Eek war!
At my friend's house today, they said they put marbles on their trampoline (50 of them) and jumped on the trampoline. We done it again today (with about 23 at the most. They can't remember where they put 24 of them, and they left 26 in the garden.) and I told them that if their mum asks (they're homeschooled) we say we're learning Science (the marbles are represented as gas particles)