Step 1: 3D print an object (or ask a friend to 3D print one for you).
Step 2: Process your 3D printed object in an acetone vapor bath (optional, 30 minutes - 2 hours)
Step 3: Turn on your smartphone's flashlight and put it on a flat surface pointing up (unless you are in space...).
Step 4: Put your 3D printed object on the shiny end of the flashlight (if you don't have gravity, attach it with a magnet or a piece of tape).
Step 5: Put on your VR headset (these things are everywhere these days).
Step 6: Bring your face 0.2-0.5mm close to your 3D printed object being illuminated by the flashlight.
Step 7: Stare at your 3D printed object with one eye for a little while, and then with the other (repeat as necessary).
Step 8: Make conclusions.
Step 9: Profit.