Schematic

Since my goal was to design a candy cane PCB, I figured that my battery choices were limited to super tiny coin cells or cylindrical batteries. I used 2 AAA cells to get 3V and have it last longer. I found SMD(0603) LEDs and Resistors on Digikey, after using an LED calculator. While choosing a switch, I wanted to use a Pushbutton. I found one with an On-On Function(When you press it, it stays in the on position until pressed again). So you don't need a latch.

PCB

Designing the Edge Cut was not hard, since Candy Cane can be broken into 3 straight lines and 3 semi-circles, which are easy to draw in KiCAD. After that, I filled the board with a ground and power pour, and the only other layout needed was to route the battery to the pushbutton.

Fun stuff