HOWTO throw a fireworks party inside your apartment

Boing Boing reader Bjacques says,

The Dutch go nuts with fireworks on New Year's Eve, and so do I. This was my second year to throw a fireworks party in my 3rd floor flat here in Amsterdam. We set off firecrackers, rockets, etc., with flashbulbs and a dynamite plunger. It's marginally safer and more fun than just chucking fireworks out the window. And it's LEGAL.

Link. Do not (neccessarily) try this at home, possums. A lot of things are legal in Amsterdam, elsewhere YMMV. And not everything that's legal is good for your health, or that of your houseguests or furniture.