I've been sent 3 so far. I fucking hate them. The first one caught me unawares. I opened it and it must have been about half a thimble full of silver and green glitter fell out of the envelope and scattered all over the BLACK work surface and floor. Work top cleaned up OK, but the floor 
Textured tiles. Have swept, vacuumed, washed, and can still see it hiding in the nooks and crannies. I have a dog, so not really really houseproud, but I am oh so slightly over obsessed Aarrrgghhhh! Give me muddy paws any day.
Glitter cards should be illegal.
They must piss others off too surely, or is it just me?