They are pretty neat Ben , but for me...if I'm going to spend my time and effort on something , I want it to be with more durable materials such as metal and wood , I don't want the Grandkids spilling their juice box on it and have it curl up and be ruined.
I totally get where your coming from Bruce, this is actually a paper cardstock model (I downloaded the instructions) and not a 5 min build...more like 10 hrs!
What appeals to me is how Well you build it affects the performance, the manufacturer actually gives you a gauge to test your skill. It was designed to run on 5 tea candles, but to measure you start removing candles.
5 tea candles = beginner or child built
4 tea candles = better
3 tea candles = really good
2 tea candles = pro build/with mods
1 tea candle = no one has reported one running on a single candle(yet)
There are actually cardstock model forums where people build all sorts of models, scale buildings for model train layouts are popular and some are Very detailed. This thread perhaps belongs in one of those forums more than here? If it does not get much interest in the next couple days I will let it fade or a moderator can remove (I will not be offended in Any way) these type kits are not for everyone and even though it IS steam powered, it is at the very fringe of our forum hobby at best!