PNGkey has a stunning number of free PNG resources. For those unfamiliar with PNG, it is a graphics file format that allows transparency. This lets you download a resource such as the flames below and spruce up an existing design, as I do in the example below:
Alternatively, you can use the images to create a new design from scratch. With thousands of images, you’re spoiled for choice:
Finally, you can add logos to designs such as banners or websites.
I hope you find PNGkey useful. Once again, many thanks to Krystallia for the tip!