While they may have been the enemy during their arcade stint the Space Invaders Drink Markers are here to help ensure you never mix up or lose your brew during social get togethers.
Available through Thinkgeek.com these intergalactic beer markers come in packs six for only four dollars, at that price you'd be losing money if you didn't get them.
No one likes the party guest who keeps misplacing their drinks in favor of other people's. While the repercussions may not be severe, there's just something universally unappealing about playing a guessing game with several identical looking bottles of beer. These colorful markers will ensure that brew stays within eye site and not turn into an ash tray before you're finished with it.