PC and all its trimmings (monitor, mouse, keyboard, headphones(no loudspeakers), mousepad).
Double power plug (Short extension lead, with enough plugs for all your devices).
Pillow for sitting on / and or sleeping.
Sleeping bag (mattress if you want)
Cash for snacks and drinks (and if you opted to pay at the door) - you can also bring your own snacks too. (Its inside a shopping centre, so there are shops and restaurants, if you want something we don't have. We will provide drinks, snacks and other food items throughout the event).