Glow in The Dark Maggots from American Science and Surplus.

Sticky, icky and glow-in-the-dark! Very creepy and very X-Filey. Our "each" is a bag of (48) 1-1/8" long x 1/4" dia, sickly-pale, squishy-soft rubber maggots - enough to infest your sister's bedroom from floor to ceiling to under the pillow with plenty left over to stick in her yogurt. Not that we'd ever do a thing like that. We like our sister. And she doesn't eat yogurt anyway.