Rubber Cement

Rubber Cement is an unlockable passive item.

Effect

 * Makes tears bounce off walls, enemies and environmental objects.
 * Tears that bounce off of enemies bounce in random directions, whereas tears that bounce off of walls and other objects bounce directly back.
 * Tears bounce off bombs.

Interactions

 * Brimstone - Overrides Rubber Cement.
 * Brimstone bounces off walls.
 * Azazel's Brimstone will continue to full length after bouncing, but will deal half of damage.
 * Bob's Rotten Head - The bomb bounces back at the player upon hitting an obstacle.
 * Continuum - Overridden by Rubber Cement; tears will still bounce off of walls and obstacles.
 * Ipecac - Tears will bounce off of walls, but not off of enemies.
 * Lost Contact - Tears will bounce off of enemy tears.
 * The Ludovico Technique - Overrides Rubber Cement.
 * Mom's Knife - Overrides Rubber Cement.
 * Parasite - Tears will bounce off of walls without splitting, but split and bounce when hitting enemies. The split tears and the original one will bounce off everything.
 * Piercing Tears - Tears will bounce off enemies instead of going straight through them, but the tears can still damage enemies such as Knights that are normally invulnerable from the front.
 * Sinus Infection: Boogers stick to enemies, but otherwise they bounce normally.
 * Spectral Tears - Overridden by Rubber Cement.
 * Technology and Technology 2 - Overrides Rubber Cement.
 * Laser bounces off walls.
 * Tiny Planet - Tears no longer fly over obstacles but instead bounce very quickly along them, appearing to "vibrate".

Synergies

 * A Lump of Coal - Due to the greatly extended time that the tears stay on the screen, the Lump of Coal's damage increase becomes more effective.
 * Homing Tears - Tears will bounce off enemies and home back in, allowing them to hit multiple times.
 * Soy Milk - The rapid fire rate allows large areas to be covered in bouncing tears.

Seeds
ABW2 HYHK (Treasure room adjacent to spawn) GN8E P6N7 (Treasure room adjacent to spawn) 1YR9 80SA (Treasure room adjacent to spawn) QRDH 161F (Treasure room adjacent to spawn)