glass (dollar store frame or pyrex dish)
Pam kitchen spray
black acrylic paint
hot glue gun
heat gun (optional)
Spray the glass with Pam. Squeeze hot glue onto the glass. If you don't like the shape, heat the blob with a heat gun to smooth it out. Position the pen and glue it down with more hot glue. Add a drop of glue at the opening of the pen.
When the blob cools, peal it off the glass. Cut off any extra glue that doesn't look like a spill. Spray the blob with window cleaner to remove the Pam. Paint with black acrylic paint. This may need 2 coats.
Leave in a prominent place and listen to the screams of horror.