ah, detergent
I've always wondered (well, not really, just idle curiousity) about colouring the vapour from dry ice but dye alone does nothing.

However, the best thing to do with a small piece of dry ice is to surreptitiously drop it into someone's tea or coffee when they aren't looking. That, or eppendorf bombs.
( the mighty badger Aphrodite, on a bar stool, by your side, Mon 13 Aug 2012, 10:32, 1 reply)

Or, as we once did
when a supplier sent us something with dry ice lumps rather than those little pellets...half fill a 500ml coke bottle with it. And wait. And wait. And wait.

And then monumentally shit ourselves when it took out two ceiling tiles and made a bang that could be heard two floors away.
(berk, Mon 13 Aug 2012, 11:06, closed)

haha, skills
I once tried it with a 50mL falcon and that nearly took out a VLF glass screen. Press caps, not screw caps, for the safety win, kids.
( the mighty badger Aphrodite, on a bar stool, by your side, Mon 13 Aug 2012, 11:32, closed)