Leave your 3 and 4 yr-old dd's alone for 2 minutes with a few vials of glitter, while you quickly check on dinner!!
My whole house is glittering! Every floor, rug, piece of furniture- even the hoover is glittery. It's that really tiny glitter as well that will no doubt be there, woven into the structure, until at least next Christmas. They did make some very, er, unusual Christmas decorations, though.. DH will go mental