I'm a big fan of the Blackmagic design ethos, that you should get everything you need to start shooting included with the camera. Many cinema cameras need huge rigs and a multitude of accessories just to be able to work.
Having said that, I still think there are a few must have accessories to get the best out of the BMPCC 4K.
Veri ND filter: https://amzn.to/3q9FIHb
Best SD card: https://amzn.to/3JiSVFo
Best SSD: https://amzn.to/3N3yRZU
Cheap battery solution: https://amzn.to/3IdyjNe
Metabones T Speed Booster EF - MFT: https://amzn.to/3CSISV6
In this video I'll go over my suggestion for gear that you'll need to get the best possible start when using this camera. It will cover Battery Solutions, recording media, ND filters and more.
CAMERAS
BMPCC 4K: https://amzn.to/3MPNy2z
BMPCC 4K cage: https://amzn.to/3w97uax
Metabones T Speed Booster Ultra 0.71x Adaptor EF - MFT: https://amzn.to/3CSISV6
Veri ND filter: https://amzn.to/3q9FIHb
Best SD card: https://amzn.to/3JiSVFo
Best SSD: https://amzn.to/3N3yRZU
Best Monitor: https://amzn.to/36l5scu
Monitor Mount: https://amzn.to/3MPRcth
Coiled HDMI: https://amzn.to/37yQa4I
Cheap battery solution: https://amzn.to/3IdyjNe
BMPCC 6K Pro: https://amzn.to/37mTEXM
BMPCC 6K Pro cage: https://amzn.to/3iczWjU
Best SD card: https://amzn.to/3JiSVFo
Best SSD: https://amzn.to/3N3yRZU
Best Monitor: https://amzn.to/36l5scu
Monitor Mount: https://amzn.to/3MPRcth
Coiled HDMI: https://amzn.to/37yQa4I
Cheap battery solution: https://amzn.to/3IdyjNe
LENSES
Wide angel lens: https://amzn.to/3q7mKRM
Best allrounder: https://amzn.to/3u3VHbb
Good allrounder & cheap: https://amzn.to/3CIBYBw
Fast Prime: https://amzn.to/3KL055A
My all time favourite: https://amzn.to/3MWgzth
SOUND
My favourite recorder/mic: https://amzn.to/361bBef
Move windscreen with acoustic foam: https://amzn.to/3KPVsqX
Vlog mic: https://amzn.to/3wad0d9