You can now buy them as a pair for a fiver.
'Handy' for applying to your college bag, school jacket, Autumn jumper or backpack, each comes on its own little card in a tiny brown envelope, sealed with a scream :O
Hand: 30mm from middle finger to wrist
Eyeball: 22mm diameter
Postage £1.50 in UK (Royal Mail Large Letter), £4 anywhere else.