I took the plunge. What other accessories I may need?

Thanks for everyone's suggestion and contribution. I have just placed order for the following items:

AMD Ryzen 7 2700X Processor
ASRock MicroATX Motherboard (B450M PRO4)
Corsair LPX 32GB (2x16GB) 3200MHz C16 DDR4 DRAM Memory Kit
Seagate BarraCuda 2TB Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM
HP EX920 1 TB M.2-2280 NVME Solid State Drive
COUGAR MX330 Mid-Tower Case
ZOTAC GeForce GTX 1060 DirectX 12 ZT-P10620A-10M 6GB 192-Bit GDDR5X PCI Express 3.0 HDCP Ready Video Card
EVGA -...

I took the plunge. What other accessories I may need?