I think they're all a bit young really for games at two. What they'd love tho, is facepainting! Tigers, butterflies.. you get the drift. Would definitely be a hit if you're willing..
Another idea, get some helium (i have no idea on the spelling, sorry!!) balloons, you can get them for less than $2 each a spotlight. Get a bunch with some weights to avoid them blowing away. Would also be a big hit
HTH