Well, I've built another ant, though not the one I was planning to:
It's a fairly uninspiring replacement to chocolate bot; was originally meant to be Lionel's replacement, but much of the design (and most of it's parts) came from chocolate bot. It's got a Park HPX in there driving the flipper as they were going for £4 on HK so I grabbed one. Has a good flip, but could probably do with some faster motors; 50:1's feel a bit sluggish on a robot this size. Don't know if it'll ever make the team, but should at least make a much better drive-all-day for uni open days than chocolate bot or Lionel.
EDIT:
Made it less boring:
30:1 motors, large wheels, and googly eyes... a winning combination
Sadly it doesn't quite fit in the cube with large wheels.. but even with small wheels it's a lot better on the faster motors. For the moment it's gonna fill Tetanus/ Bad idea's place on my team, replacing Tinny, as this things fairly well armoured with the front being 2mm polycarb. As much as I really like Tinny, it is not armoured well and i fear would be no more after it's next event... May make a polycarb version of it one day :L