If in Holland we get really excited about something that turns out to be a big let down we say someone's made us happy with a dead sparrow. 'Blij gemaakt met een dode mus'.
When the Dutch Authority for Consumers and Markets wanted to warn people of the dangers of buying online we used this super Dutch proverb to our advantage. Showing an unboxing video for the sparrow1. A really cool sounding new smartphone that turned out to be, you guessed it, just a dead sparrow. We then told people to go to our platform to learn how to deal with nasty surprises.
The sparrow was found deceased on the side of the road and prepared by a professional taxidermist. No animals were harmed during the making of the video, anything we did to it happened after it had died ;)