16. Which printable upgrades are needed for Ender 3?
I was very selective about printing the upgrades, however, this turned out to be a great learning opportunity.
- Creality Ender 3 board fan guard

This is the Thingiverse link.
2. Ender 3 Filament Guide

This is the Thingiverse link.
3. Ender 3 filament Guide

This is the Thingiverse link.
4. Ender 3 Extruder knob

This is the Thingiverse link.
5. Ender 3 Cable Clip

This is the Thingiverse link.
6. Creality Ender 3 Pi Cam Mount

This is the Thingiverse link.
7. Creality Ender-3 Display Ribbon Cable Clip

This is the Thingiverse link.
8. Ender 3 LCD Cover

This is the Thingiverse link.
9. Ender 3 Display LCD PCB Cover

This is the Thingiverse link.
10. Ender 3 Stock PSU Fan Silencer Duct

This is the Thingiverse link.
11. Ender 3 Side Spool Converter Bracket

This is the Thingiverse link.
Hope this helps!