Flat-ish horizontal space always seems to be at a premium in any lab I’ve worked, and it always fills up. Portable area, which isn’t on the floor (less bending and lifting), is even more so — we have several carts that are supposed to be for temporary equipment, but “temporary” is subjective — sometimes the cart sits there for months on end. Since that invariably leaves nothing free, we have this:
No place for people to sit, but the frequency synthesizer and some tools/components can relax. It gets bad enough that there are times when only one lab stool is free, but it turns out not to be a big deal, since only one section of lab bench (where the best soldering station is located) is remotely likely have any free space on it.