This electronic beer can opener keychain definitely falls into the "infinite toys" category. That is to say, it allows you to simulate a mundane but strangely satisfying experience on demand.
As you might have guessed, that "strangely satisfying experience" is the mouth-watering sound of a pop top being, well...popped. Sure, it doesn't compare to having an actual beer, (it may actually make you think of opening a can of tuna, which is not all that great), but hey—if you are feigning for a beer, this is a lot cheaper than hitting the vending machine all day at work to compensate. [ThinkGeek via BookofJoe]