Giant Spiders Projected Onto Windows

This video proves that all one needs are a set of box-arrested arachnids and some gigantic screens to convince passersby that you're a mad scientist who has brought a horrifically unnecessary growth spurt to a species that probably would have been best left small. 

The satisfaction of seeing the looks on peoples' faces might only be topped by their expression when you tell them that the glass that's holding the spiders in the room are only "sort of secure."