If the question is "Can common items sold in airports after the security screening be used to build lethal weapons?" then this website is the answer several times over. You still feel safe with the security theater you bought with a little liberty and enough tax money to fund educational efforts?  (disclaimer…I have not tried any of these out yet but they look like solutions to the stated question) 
What is Terminal Cornucopia? In early-2013, independent security researcher, Evan “treefort†Booth, began working to answer one simple question: Can common items sold in airports after the security screening be used to build lethal weapons? As it turns out, even a marginally “MacGyver-esque” …
