If you have an event and you want to get people feeling involved, then encourage them to take Instagrams. You can do that by displaying the Instagrams prominently on a plasma screen or projecting them on to a white board or wall.
One of the best ways of doing this is to use Snapwidget.com. You can get an embed code for an Instagram hashtag then embed that code in a blog page. Snapwidget can make the Instagrams scroll along dynamically or create a dynamic grid display which displays the latest Instagrams in the top row.
Using Snapwidget requires you to be able to create a blog or website. However, if you go to Tagboard.com, you can get a website immediately set up to display your hastags. I found it didn’t display all the Instagrams taken and the refresh wasn’t as automatic as I would have liked, but it certainly provides added eye candy to an event.