I’ll volunteer to recuse myself because it may not be fair, but the theme would be ‘projector art’, or taking a two-dimensional ‘something’ and projecting it onto a 3D space and photographing that.
An example would be one of my entries for ‘green’ (can add photos here if needed). That was a circuit board I absconded from work and jammed into my opaque projector.
Unfortunately, it does need equipment, but a overhead projector, digital/LCD projector, or opaque projector would be acceptable. The last can be had for about $20-30 from Amazon for a starter box that can take a 4″x4″ square of a flat thing.
Heavier than normal editing would have to be allowable, but no stacked images, adding/removing components other than cropping should still apply. HDR ain’t gonna help a lot anyhow.
And I can offer tricks, tips, or whatever if it helps. I make a lot of mistakes lol, but I do learn from them.