It's Friday! ... The 13th!

Happy Friday the 13th - I am refusing to answer the phone in the office today, claiming superstition, but really because it's Friday.  In the spirit of the day here's a table of atmospheric spooky little effects one can add to possibly make one's players uncomfortable.

Not Spooky

1D20	Disconcertingly Creepy little things.
1	Sudden jarring feeling of nausea, as if falling unexpectedly.
2	Vermin appear to be trying to write something out, either by scratching it in wall or with their bodies, maybe it’s the character’s name.
3	The smell of burnt hair.
4	Vile grub crawls out of wrist cuff, falls to floor and quickly writhes away.
5	Feeling of heat, like hot sun, flares across face.
6	Cobwebs containing a glinting gold tooth.
7	Soiled pair of torn undergarments neatly laid on floor.
8	Change in air pressure, causing the ears to ‘pop’.
9	Several skeletons of small animals stripped of all flesh and carefully articulated with copper wire.
10	The distant sound of a busy taproom.
11	Spots momentarily dance in the characters’ vision.
12	The voice of the character’s mother or childhood companion, whispering something urgent and unintelligible.
13	A sound of something crushing bones grinding them, as if between massive teeth.
14	A rat or large insect, dead on the floor, and with a face that resembles a human – possibly a recently encountered NPC.
15	Copious brown splatters, apparently of blood, on the ceiling.
16	Lantern like light down distant hall spotted briefly before suddenly winking out.
17	Companion’s shadow seems to glance meaningfully over one shoulder, companion does not.
18	Air tastes of ozone and dries throat.
19	A still soft and warm candle that produces the rancid smell of burnt animal fat, a smell that is now filling the room.
20	3” Globule of disgusting sludge, bright orange and pulsating.