Day 2 was pretty much just grinding seeds and plastic, so the update is a bit short.  
  
Combining a Revelation nut and 3 Red plastic blocks yields 11 Friend shepachs. Once placed, the Friend shepach fires the same heart projectiles as the Friend wand in a random horizontal direction (excluding the top and bottom). While the firing interval is constant, the direction is randomized by default; however, if only one side is exposed, the projectiles will only fire in that specific direction.

To gather consumable materials for crafting, I needed to find a way to collect Friend shepach projectiles using as few blocks as possible and without using a Funnel. The video above shows my research into projectile trajectories while figuring this out. Because the projectiles are affected by gravity and have a slight bit of randomness, the trajectory gets messy after a certain distance. However, within a specific range, the path remains fairly consistent, allowing me to reduce the number of blocks needed for the 'heart collection chamber' by calculating the effective flight distance.

The heart projectiles disappear quickly upon hitting a mob, but if the collision point is thinner than a single block, they often get stuck or bounce off due to the collision detection. Sometimes they pass through a one-block-thick wall, and on very rare occasions, they even clip through two-block-thick walls. Further testing is required, but I've frequently observed them colliding with other projectiles or the player's body, getting squeezed into the wall, and then popping out on the other side.

If you set up 4 Friend shepachs and ensure no projectiles leak out, you should be able to gather roughly 40 Red plastic blocks every 30 minutes.

Day 2 of the Pacifist Challenge - Projectile Trajectories of the Friend Shepach