Amy said:
...you have....a BALL PIT!?!?! Oh damnit why did I have to miss that?!?! I used to have my own ballpit in my living room actually. It was fun.
It's an artificial "cave" - in teams of two you have to take two full tackle sacks through the system (and, I think, back again). There's a square see-through upward sloping crawl ending in a "duck" under a bar in a ball-pit, a bit further there's a sort of upward u-tube - go in it floor level, bend your body over a barrier at about chest height and under another at about ankle height which is only about two feet horizontally from where you came in, there's a very slippery tube sloping up at about 45 degrees, too long for normal human beings, so the first one through has to be pushed and then turn round and pull their partner ...
(The ferret, of course, being the only one of his species at the conference, ran the course without a partner)
Then of course there's the BCA cave, which is much more realistic, and very tight and contorted.
And of course ladder races, and prussiking races, and an SRT "assault course", all with prizes donated by various caving related companies.
But it'll all be there next year. Think of it as giving yourself an extra 12 months to raise the money.