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X-mas present for someone dear,
WS2812B leds driven by an Arduino Nano, programmed with a few modes like heartbeat & colour wheel.

BOM

• 8x WS2812B addressable LEDs (NeoPixel-like)
• 1x MT3608 DCDC boost converter
• 1x TP4056 Li-Po charging board
• 1x IRF630 N-channel MOSFET
• 1x LM7805 5V 1.5A linear regulator
• 1x 10k linear potentiometer
• 1x 10k wheel trimmer potentiometer
• 1x 1000uF Cap
• 1x 100uF Cap
• 1x 10uF
• 1x ELEGOO Arduino Nano
• 1x IRF630 N-channel MOSFET
• 1x 2-pin JST connector
• 1x 2000mAh 18650 cell
• 2x 6x6x6mm SPST push switch
• 1x SPDT slide switch
• 2x 4.7k resistor
• like an assload of 1mm diameter brass rod