The Port-a-Pint collapsible beer glass is what we call an everyday essential. Lord knows we all encounter spontaneously erupting frat parties at high frequencies, and who wants to be caught cup-less when the keg starts flowing? No one, that's who. Just stash this space-saving saucer in your pocket until you hear the party alarm. You'll be knocking back your third round by the time the paper cup scroungers hit mid-line.
About $8; perpetualkid.com