In Yr7 we used a tool called Padlet to gather some ideas on being International Students. This used to be called WallWisher and I've used it many times in the past with different year groups. I guess the reason they changed the name was that it's now iPad compatible, which of course makes it infinitely more useable at ISP.
Just go to the website, padlet.com, and start a wall. You can add sticky notes to it, with tect or images, and it's easy to invite others to join in. I'm sure many of our teachers will find some highly creative uses for it.