Tools & Materials
Must have tools
Generic 3D printer toolkit (brand doesn't matter much - the tools are simple, cheap, easy to manufacture, and generally quite durable)
Quality hex wrench set (Bondhus brand with ball-ends are good - generic brands are cheaper but don't fit as well and aren't as strong)
Brass brushes (helps to clean the nozzle - essential for PETG)
Mini heat gun (helpful for cleaning up stray strands of filament on prints - especially helpful on PETG and nylon prints; a cheap hairdryer works too)
Mini spray bottle (for spraying IPA to clean the print bed)
Supplies
90% isopropyl alcohol (IPA) (to clean the print bed)
Bearing/rod lubricant (SuperLube is another good brand. Only use for the smooth rods/bearings - do not use for the Z-axis screws)
Managing heat and noise
24" Photo tent print enclosure (great substitute for a rigid enclosure to maintain consistent temperatures and reduce noise - tape recycled bubble wrap sheets as needed to provide more insulation)
12" x 12"x 0.25" cork boards (insulate bottom of heatbed to reduce power consumption and warmup times - you will need to trim to fit your printer)
Filaments to try
3D-Solutech PLA (Good beginner filament - easy to print and very pretty - best for product photos. Material is more brittle and heat-sensitive comparted to PETG and ABS so not appropriate for many functional parts
Inland PLA (Another good budget brand)
Hatchbox3D PETG (Consistent semi-gloss finish- good durability suitable for customer samples/prototypes and even production parts - may require a hairdryer/heatgun to clean up thin strands depending on print settings and part geometry)
Inland PETG (Consistent matte finish especially when using "ironing" feature - less stringy than Hatchbox but poorer bridging performance)