We have covered various NeoPixel rings and strips here in the past. This 8×32 NeoPixel RGB LED Matrix happens to be an awesome solution for DIYers. It not only has a flexible design, but it also lets you control all its 256 LEDs using a micro-controller pin. The matrix has a thick flexible PCB backing that can be bent and curved around surfaces.
The product measures 320mm x 80mm x 2mm and weighs 63g. You probably shouldn’t program all LEDs to be turned on to white at the same time as the PCB might not be able to handle it. Nevertheless, this flexible NeoPixel LED Matrix can handle images or scrolling messages.