I have lots of stuff on my desk, but the most frequently used items are one of my calculators (I have to have a spare for those times when I've misplaced (ie its buried under one of the piles of paperwork) the other one) an A4 ringbound notepad (ringbound so that it's easier to utilise both sides of the page) and whatever pen is currently my favourite.
Among the other random stuff on my desk though there are currently a few maps and plans of sewage treatment works that I'm working on, a copy of the WRc Sewerage rehab manual, a set of sewage works design manuals from the 1970s, a huge box of disposable earplugs, 2 unused laptops and a couple of reports that I need to find the time to read through.
