Ideas for a horse charade game needed!?

I'm hosting a day camp for a local group of 4-Hers. This is a horse-specific club, so all activities should be horse related. One game we're going to play as an "overflow" activity is charades. Could you please give me some ideas of things that the kids could act out? Please keep in mind that a majority of the kids really love horses, but aren't necessarily experienced with horses. Therefore, I need things that are really basic, common horse knowledge. Thanks!!