Bevometer Counting Koozie
I'm not sure if the Bevometer is a really good thing because it will let you know this is actually your 8th IPA when you think it's just your 4th, or a really bad thing because it will encourage you to go for the 9th to prove you can out-drink your friend Cornelius. Responsible tracker or evil instigator: you'll have to choose your own application for this beverage-counting koozie.
They say the Bevometer is "an automatic scoreboard for consumption." It detects each new can or bottle you slide into its nest and adds a +1 to your current drinking session's tally ("This Time"), as well as to a "Lifetime" tally it tracks underneath.
Bevometer koozies are lightweight and the same size as traditional foam koozies. They come in black, red, and yellow.