pffffttt... yeah, heaps. With things stacked on them.
I've actually got a really bad habit of just filling up available space with junk, e.g. there are 7 seats in this room (2 chairs, 3 seater setee, comfy chair, and office chair) and only one can be sat on, the one I'm in.
The only time I really hate it is when you're just stupifyingly tired after coding for about 30 hours, then when you go to bed you realise it's all covered in carrier bags full of cables, and coffee beans and motherboards and plectrums and a Prima Duck.