Turn your doorway into a battlefield with the functionally clever Ping Pong Door by Tobias Fränzel. I can imagine this would have been a big hit in the offices of all the dot com start-ups in the late 90’s.
WAAAAAAAANNNTT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

and just to let you know I reblog like crazy.
my blog is about 95% reblog so that's just a warning!