I recently did a show and having a poster behind me in the back of the booth worked well.Folks move fast at a show you need to be able to attract them with something.
I also had a great opportunity as the building was oriented east to west with large south and north roof pitches. I could show the difference in temperature between the two roofs and explain that the outside temperature was the same in both cases but the sunlight was more direct on the south roof. There was also evidence of water leakage which was available. It was my display already existing in the space. It gave the opportunity to show what it could do in real time. It also gave me the opportunity to explain why I don't want image in the middle of the day due to solar loading.
I would also recommend working the show as folks are there and will pass you by unless you try to pull them in.
I am a big fan of the three cups we saw during training. you could bring a hot and cold thermos and three identical cups.
Glen
www.rede3.com
San Diego CA