Kit: SMD practice board for soldering: Amazon.de: DIY & Tools
BTF-LIGHTING WS2812B 100PCS 5050SMD Individually Addressable Smart RGB LED Pixel for Arduino 5V DC Single 1-led LED Module Pixels Color Light little rgb LEDs Lampon Black Heat Sink PCB Board Only DC5V - -
Make Your Own PCBs with EAGLE: From Schematic Designs to Finished Boards, Monk, Simon, Amos, Duncan, eBook - Amazon.com
Amazon.com: Velleman Inc. SMD HAPPY FACE : Electronics
Teardown: Amazon Echo Dot vs Google Home Mini - EDN