Hey, drew these up for a lab map, figured I'd share!
Some of them are at double size because they were blurry on import otherwise. They're not all double size because that also made some blurry. I'm not sure what's going on there, maybe there's a target resolution? If someone explains the dark magic then I can maybe fix things. In the meantime:
A computer
Two subtly different bookcases
A shallow pit (uses transparency on floor tiles, see image)
Two cracks for use on floor tiles
A bit of spattered blood (probably the most questionable of these, to be honest)