Interchangeable night light

This light uses a Led Coaster (1/5/10pcs LED Coaster Lights - 6cm Luminous Bottle Stickers with Multi-Color Lighting)

This can be used as a steampunk cosplay prop, a night light, or just a decorative piece.

Start by printing the stencil you like with white filament. At 0.6 mm height, pause and switch to black filament.

Once printed, take a knife and carefully trim away the soft border. Keep only the PCB — don’t peel off the back side with the on/off button.

Place the PCB into the “bottom outie” piece. Be careful not to press too hard on the LEDs.

Next, use a coin to screw the “bottom innie” into place.

Take the “outie holder,” insert the stencil into it, and screw it onto the “bottom outie.”

Before final assembly, try screwing the parts together to check the fit. If there's too much friction, apply a small amount of silicone oil to the threads — it should help things go smoothly.