As far as daily annoyances go, people who make a mess without cleaning it up are roughly on a level with onion tears and slow wi-fi. Having any contact with these cretins is always infuriating and, if they’ve somehow inveigled their way into someone’s home as guests, they’re not likely to receive a repeat invitation.
Of course, indulging in this kind of reprehensible behavior is probably the furthest thing from your mind, but that doesn’t mean you can’t use this common source of aggravation to pull someone’s leg. Simply leave this imitation of a spilled paper cup of coffee on top of an upholstered sofa or laptop and watch pulses rise.
The level of realism is very high, at least from a few feet away, so you can count on people getting furious before figuring out that it’s a joke.
The only real complaint to make about this item is that the solid “spill” part doesn’t always sit flush with the surface on which it’s placed, though you can try heating the resin in boiling water to smooth it out.
Depending on what kind of environment you plan to use it in, you may also be interested in the same concept as a glass of red wine.