Here’s a list of some project with great PCB artwork:

Pure art boards

• Full Panel PCB Painting
• Hand-drawn PCB Artwork
• Making Braille Signs out of PCBs
• PCB lapel pin
• Full panel PCB sign by Andrew Sowa
• Lumen Electronic Jewelry
• Creating the Benchoff Nickel
• PCB Art With 4 Layer Boards
• PCB Paintings Facebook group
• PCB Painting Art Nouveau
• Convert Inkscape SVG drawings to KiCad footprints

Functional boards with awesome art/layouts

• OSHWi Octopus Badge by Gustavo Reynaga
• Trammell Hudson PCB art soldering badge
  • Twitter
• Minifigure Atmel SAMD21 Board
  • Shared Project
• Cyborg Ring by zakqwy  of neurotinker
• Glowbugs by JasMoH and reverse mount LEDs
• OSH Park PCB Crown
  • Lessons in 3D circuits
• Brain board for Sarah Petkus’ Noodle robot
  • Robotic Arts: Noodle is Gettin’ Bean Feet
• Heart-shaped Flashlight PCB
• Snowbot
• Trixel Interactive LED Kit
• 4CHord MIDI
  • Twitter