Receiver

1 x PCB GERBERS here
1 x virgin ATMega328p-AU: LINK eBay
12 x 200R 0402 SMD resistors: LINK eBay
12 x 0402 SMD LED: LINK eBay
1 x SMD push button: LINK eBay
2 x 10K 0402 SMD resistors: LINK eBay
1 x 100nF 0402 SMD capacitor: LINK eBay
1 x 10uF 0805 SMD capacitor: LINK eBay
Wires LINK eBay

Wire, soldering iron, solder, etc...
Arduino UBO for bootloader burn