The Sims 4 Collectibles: Microscope Prints
To begin collecting these prints, Sims will need to purchase a Microscope. Some of the more common prints can be found by simply using the microscope, but the more uncommon and rare ones require some extra work.
Sims who level up in the Logic Skill will unlock the ability to “Collect Microscope Samples” from Crystals (Level 8 Logic Skill), Fossils (Level 7 Logic Skill), and Plants (Level 2 Logic Skill), and “Analyze” them via the microscope. The result is Microscope Prints.