Quantity   Component name
2 × Roomba - 500 series 2 of these gnarly suckers are needed. As long as the clean button and the wheels work, we're good to go.
1 × An Arena Any confined space will do, but I worked out 2meters by 2meters was good for the sake of speed. So my lounge room or an office at work will do nicely.
1 × Video Stream Not necessarily needed but I'm running this thing at work and some people have work to do there. Can't for the life of me work out why.
1 × A day to Hold the Event Well, I don't know what else you want to know here. Let's just do this in 1 day and crown a winner at the close of business.
1 × 1 Umpire You know. To run the whole thing. Has to be able to make bad calls, experience blindness at convenient moments and accept bribes.
1 × Some Pins Big long pointy bastards. The kind that look threatening to balloons.
1 × Some Water Balloons Don't be weird, fill them with air or you're going to have problems
1 × Some Blue Tac or Putty To stick the pins to the Roomba Gladiators.
1 × Birthday Candles Upgraded weaponry. Survive round 1 and 2? Use your victory points to buy fire! Don't need to poke the balloons anymore, just get close.