For sheer destructive firepower from a single piece of non-nuclear ordnance, we heartily recommend the fuel-air device. If, however, you don't have a fuel-air bomb in your desk of a boring Thursday morning, we can heartily recommend the genius that is the Trebuchet. This classic piece of ordnance from pre-history was designed to fling tonnes of rock at Huns, Goths, Vandals and a few pesky Gauls. In fact, anyone who dare challenged the supremacy of Rome took one of these fellas square in the chops.
Now, then. At Gadgetshop HQ, we don't actually have a full-size Trebuchet to hand, but we do have a 30cm wooden replica, which, with a bit of nifty self-assembly you can turn on your workplace nemesis with deadly accuracy. Yes, it does indeed work (for we have lab tested it ourselves). And it is indeed accurate, even with a ball of plasticine taking the place of a two tonne boulder. As the Trebuchet's component bits and bobs are pre-drilled for convenience, assembling this classic weapon is a piece of the proverbial cake. Just read, glue and wait. Then unleash merciless vengeance on anyone who dares to challenge the might of your Empire. In short, it's totally ballistic.