Clean your shop
First time all the stuff got thrown around and then fused, it was sad that they were so bad at procedure they built an unknown high-energy system and left stuff (conductive stuff no less) laying all over.
After that, why aren't they putting their tools and paperwork into drawers?
Sure, I am sure someone will say I am a nitpicker like the technobabble thread, but really? The found-footage thing is played out, the kids blather on too much, and they are also geniuses who mostly just assemble things, but have terrible procedure? Great. So it's a nerd movie designed to annoy all the nerds?