Really Need Help for Show

Due to my going back to Taiwan during 11/3-18, I haven't done much in my project since 11/3. I recently got notification about my place of the thesis pop up show, which is at the kitchen area. For the time limit, I am thinking placing the monsters in the kitchen area. But I don't know how to place things at the place I desire in an AR app. I thought of some interactions......

When audiences look up they can see the eye, the eye always looks at you

Hand on shoulder

demon kid on the fridge, also looks at where the audience is

audience hear laughter when close by the wall

I can just choose some(one or two) to finish for the time limit